Page 1

MODEL 428 & 428L POWER STRAP ROCKER CLAMP QUICK DIE CHANGE (QDC)

N118 W18251 Bunsen Drive Germantown,WI 53022 (262) 250-4410 • Fax (262) 250-4409

pfa-inc.com Copyright ©2018 PFA, Inc. All rights reserved. Reproduction or use in any manner of editorial or graphic content herein without the express written permission of PFA, Inc. is strictly prohibited. Every effort has been made to ensure the information within this publication is complete and accurate at the time of printing.

S3016 RC-428+428L REV A - 3/18


TABLE OF CONTENTS 1. Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Operation – Die Exchange Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5. Seal Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6. Recommended Spare Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 7. Drawing 428. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 8. Drawing 428PD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 9. Drawing 428L. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 10. Drawing 428LPD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 11. DWG CLAMPSAFE-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 12. DWG CLAMPSAFE-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

pfa-inc.com MODEL 428 & 428L | ROCKER CLAMP | PAGE 3


DESCRIPTION 1. Please refer to drawings 428/428PD and 428L/428LPD. 2. The Model 428 and 428L are rocker clamps with the piston, Item 14, located at the rear of the clamp and pushing upward on clamp lid, Item 2. 3. The mechanical lock screw, Item 12 (428L only), is threaded into the lid. When screwed tightly against the base plate, Item 1, it retains clamping force when hydraulic pressure is shut off. Model 428 are non-locking and require hydraulic pressure to be maintained at all times. 4. Clamping height is provided as part of the part number when the clamp is ordered and achieved by various combinations of nose spacer bars, Item 24, attached to the clamp lid, Item 2, and clamp body spacers, Item 25, attached to the bottom of the clamp base, Item 1.

INSTALLATION 1. Verify clamp opening is slightly greater than clamping height, but less than approximately .180”. See notes #3 and #5 on drawings 428 and 428L, as appropriate. 2. Verify that T-nuts are sized properly for T-slots and that threaded stud and T nut assembly (¾”-10) are of the proper length. a) T-nut neck width should be approximately the width of the narrow part of the T-slot. b) The threaded rod when installed, should be flush with or protrude below the bottom of the T-nut. If the screws are too long, they will drag on the bottom of the T-slot; if they are too short, strength will be compromised. 3. After ensuring proper T-nut engagement, set sliding gap by tightening the lock nut, Item 19, until the clamp is pressed firmly against the bolster or ram and no longer movable along the T-slot. Then back away slightly until the clamp slides snugly in the T-slot. The goal is to keep the gap minimal, yet have good movement of the clamp. See note #3 and #5 Drawings 428 and 428L, as appropriate. 4. Set retention bracket, Item 5, so that the lock nuts, item 19, can not move. Do this by moving the retention bracket tightly up to the nearest wrench flat and firmly tighten the screw which serves the retention bracket. Use breakable thread locking compound to secure retention bracket screw. 5. Attach hydraulic hoses. Do not overtighten fittings.

pfa-inc.com MODEL 428 & 428L | ROCKER CLAMP | PAGE 4


OPERATION – DIE EXCHANGE SEQUENCE Read the following procedure keeping in mind your company’s specific die exchange procedures. Then integrate the following steps to meet your specific requirements.

Note: For Locking (428L) clamps, hydraulics will need to be reconnected to reclamp, unlock, and release the clamps. PLEASE REFER TO 428 AND 428L DRAWINGS WHEN FOLLOWING THE SEQUENCE BELOW: 1. Jog ram to bottom of stroke and prepare for die removal. 2. For locked hydra-mechanical clamps (428L), connect hydraulics and apply 5000 psi hydraulic pressure to clamps. Press booster button (HM) to boost pressure.

Note: For locked clamps, the pressure used to release the clamps must be equal to or greater than the pressure used to actuate the clamps. 3. For locked clamps (428L), turn the lock screws, Item 12, counter-clockwise away from clamp base. 4. Release hydraulic pressure to unclamp die. 5. Move clamps away from die. 6. Jog ram to full up stroke. 7. Remove die. 8. Place next die on bolster. 9. Make required shut height adjustment and jog ram to bottom of stroke. 10. Move clamps to die ensuring a small gap is present (confirms correct clamp height to clamp plate thickness match).

CAUTIONS: • CLAMPING POINT MUST TOUCH DIE AND BE ENGAGED FULLY - AT LEAST 1/2”. 1” PREFERRED. • LIMIT CLAMPING RANGE AS EXPLAINED ON DWG 428 AND 428L • THE CLAMP MUST BE PERPENDICULAR TO THE DIE – FULL NOSE SPACER BAR ENGAGEMENT. 11. Apply 5,000 psi hydraulic pressure to bolster mounted clamps then to ram mounted clamps. 12. For Locking Clamps (428L), set lock screws, Item 12, by manually turning clockwise – inward, until the lock screw is firmly in contact with clamp base plate. 13. For Locking Clamps (428L) only, release hydraulic pressure. 14. Examine all clamps for proper position and confirm that all clamps are engaged by attempting to move them manually. 15. Commence stamping when ready.

pfa-inc.com MODEL 428 & 428L | ROCKER CLAMP | PAGE 5


MAINTENANCE 1. Periodically check hoses for signs of wear. 2. Replace hoses if necessary. 3. Examine clamps for damage. 4. Check mechanical Lock Screws to make sure they turn easily. 5. Chase any damaged threads if necessary. 6. Check for hydraulic leaks. Tighten fittings or replace hoses as necessary. 7. Change seals as needed. See enclosed for seal replacement procedure. 8. If a pipe thread fitting is removed, apply new thread tape before reassembling fitting.

SEAL REPLACEMENT PROCEDURE CAUTION: WEAR SAFETY GLASSES PLEASE REFER TO DRAWING 428LPD AND DO THE FOLLOWING: 1. Remove lock nut (Item 19) and remove T-nut/stud assembly (Item 22) from clamp assembly. 2. Turn clamp upside down and refer to drawing 428LPD. a. Remove two springs, (Item 7). Use a small tool with a hook on the end to extend springs. Remove roll pin (Item 23). b. Separate clamp lid from base. 3. Refer to drawing 428LPD and do the following: a. Remove spiral retaining ring, (Item 17); and piston guide bushing, (Item 16). b. Extract piston, (Item 14). With extreme caution, slight hydraulic pressure may be used to push piston out. c. Replace piston seal, (Item 15). Note: The seal is not an “o� ring and must be oriented as shown on drawing. d. Examine cylinder (bore) and polish any rough area. Remove any chips or other foreign matter which may damage seal. e. Reassemble in reverse sequence (c, b, a). Replace spiral retaining ring if necessary. 4. Finish reassembly of clamp. Make sure that Belleville Washer, Item 4 P/N 3426, is installed with crown up (outside diameter of washer is in contact with the Rocker Bar, Item 3 P/N 3436).

pfa-inc.com MODEL 428 & 428L | ROCKER CLAMP | PAGE 6


RECOMMENDED SPARE PARTS For Non-Locking Clamps (428) Please refer to parts contained in Seal Replacement Kit 428PD-SEAL and Refurbish Kit Part# 428PD-RFB as shown on drawing 428PD. For Locking Clamps (428L) Please refer to parts contained in Seal Replacement Kit 428LPD-SEAL and Refurbish Kit Part# 428LPD-RFB as shown on drawing 428LPD.

pfa-inc.com MODEL 428 & 428L | ROCKER CLAMP | PAGE 7


CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the company’s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

7.25

6 4.50

4.25 2.00 WIDTH WITHOUT HANDLE

2.77 1.75

.62 1.12

OPTIONAL HANDLE .50 NOSE SPACER BAR IF REQUIRED

7

MINIMUM CLAMP HEIGHT DEPENDS ON NOSEPIECE THICKNESS THE SMALLEST BEING .187 THICK AND THE THICKEST 1.25.

6

MAXIMUM CLAMPING HEIGHT IS 1.75 WITHOUT A NOSEPIECE. A SPACER PLATE MAY BE ADDED UNDER THE CLAMP TO INCREASE THIS MAXIMUM CLAMPING HEIGHT.

5

KEEP THE GAP BETWEEN THE CLAMP ROCKER AND THE MOLD TO A MINIMUM. THE CLAMP STROKE WHICH IS .36 MUST BE SUFFICIENT TO CLOSE THE GAP AT 3 AND 5 AND STILL APPLY 10,000 LBS OF CLAMPING FORCE TO THE MOLD. THEREFORE, THE GAP AT 5 SHOULD NOT EXCEED .180 WHICH IS 50% OF STROKE.

4

A NOSEPIECE OF REQUIRED THICKNESS IS ATTACHED TO THE NOSE OF THE CLAMP ROCKER, IF NECESSARY, TO MATCH REQUIRED MOLD CLAMPING RANGE.

3

THE STUD IS ADJUSTED AT THE TIME OF INSTALLATION SO THAT THE GAP BETWEEN THE T-NUT AND THE T-SLOT IS MINIMIZED YET ALLOWING THE CLAMP TO BE MOVED EASILY. USE PERMANENT THREAD LOCKING COMPOUND AND/OR OTHER MEANS OF ENSURING THAT THE STUD DOES NOT ROTATE IN THE T-NUT. CLAMPING FORCE IS 10,000 LBS. AT MAXIMUM HYDRAULIC PRESSURE OF 5000 PSI.

2 1

THE MODEL RC-428 IS A ROCKER CLAMP WHICH MAY BE MOUNTED FIXED OR WITH A T-NUT. USE WITH MOLDS OR DIES HAVING A MOUNTING OR CLAMPING PLATE MADE FOR CLAMPING THE MOLD OR DIE.

4.69

1.14 MAX

1.55 4

7/16-20UNF 37° FLARE 5 MOLD

7 MACHINE PLATEN/ PLATEN PLATE .62

2.88

3 GAP

STUD

T-NUT/SLOT SEEN ROTATED 90° FOR CLARITY.

MODEL 428 ROCKER CLAMP RC-428

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CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the company’s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

7 6

7 APPLY MAGNA-LUBE 'G' TO SEALS AND MOVING PARTS WHEN ASSEMBLING.

5

6 THIS SPACER PLATE (NOT SHOWN) FOR ACHIEVING HIGHER CLAMP GRIP IS AVAILABLE AS A SEPARATE LINE ITEM. 5 THIS PART IS STANDARD AND SHIPPED WITH ALL CLAMPS. OTHER SIZES PER APPLICATION ARE SHIPPED IN ADDITION. 4 NOTE SEAL ORIENTATION (CRITICAL) (SEE SHEET 2) 3 THIS COLUMN SHOWS PARTS INCLUDED IN THE REFURBISH KIT (PART# 428LPD-RFB) 2 THIS COLUMN SHOWS PARTS INCLUDED IN THE SEAL KIT (PART# 428LPD-SEAL) 1 THIS COLUMN SHOWS PARTS INCLUDED IN THE BASIC MODEL-428L CLAMP. (REFERENCE ONLY).

4

1 1 2

1 1 -

1 1 1 1 -

1 1 -

1 REF 1 2 2 4 1 1 1 1 1 1 1 1

2 -

-

1 1 1 2 2 1 1 1 1 1 1

QTY RFB

3

QTY SEAL

2

QTY REF

3613 428UG 3740-COD 1185-5 1604-12 1687-8 3690 3600 3840 3582 3581 3583 3580 2816-1

BOTTLE W/CAP & MAGNA-LUBE 'G' USER GUIDE SPACER PLATE-GUIDE (NOT SHOWN) SPACER BAR (NOT SHOWN) ROLL PIN, .125Ø X .75 T NUT/STUD ASSY (PER CUST APP) SCREW, SHC, 10-24 X .50 LG HANDLE ASSEMBLY (OPTIONAL) LOCK NUT BUSHING, SLEEVE .75 ID RETAINING RING, SPIRAL GUIDE BUSHING, PISTON PISTON SEAL PISTON, 1.186Ø REST BUTTON

1804-1 1785 1657-4 1658-16 1700-4 1620-6 L4255 3426 3436 3597 3598

CONNECTOR, 1/8NPT - 37° FLARE PIPE PLUG, 1/8-27NPT SET SCREW, 8-32 X .25 (SOFT TIP) SCREW, SET, 8-32 X 1.00 SPRING, EXTENSION SCREW, SHC 10-32UNC X .375 LNG LOCK PLATE, HEX NUT WASHER, BELLEVILLE, .762 ID ROCKER BAR LID BASE

PART NUMBER

DESCRIPTION

27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 ITEM

1

UNLESS OTHERWISE SPECIFIED ALL DIMENSION TOLERANCES ARE IN INCHES TOLERANCES ARE; FRACTION DECIMAL

ANGLR

MODEL 428 ROCKER CLAMP RC-428PD

PAGE 1 OF 2

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CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the company’s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

6 5 19 4

4

8

SEALS MUST BE INSTALLED AS SHOWN GAP DOWN

9

3 2 13 7

17

23

16 11

15 14

20

A

21

VIEW SCALE 3:1

18 VIEW

1

A

10 22

MODEL 428 ROCKER CLAMP RC-428PD

PAGE 2 OF 2

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CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the company’s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

7 THE CLAMP IS AVAILABLE WITH A HANDLE (MODEL-428LH) SHOWN IN THIS VIEW ONLY. 6 KEEP THE GAP BETWEEN THE CLAMP ROCKER AND THE DIE TO A MINIMUM. THE CLAMP STROKE WHICH IS .36 MUST BE SUFFICIENT TO CLOSE THE GAP AT 3 AND 6 AND STILL APPLY 8,000 LBS OF CLAMPING FORCE TO THE DIE. THEREFORE, THE GAP AT 6 SHOULD NOT EXCEED .18 WHICH IS 50% OF STROKE. 5 HYDRAULIC CONNECTION 37° FLARE 7/16-20UNF. 4 A NOSEPIECE OF REQUIRED THICKNESS IS ATTACHED TO THE NOSE OF THE CLAMP ROCKER, IF NECESSARY, TO MATCH REQUIRED DIE CLAMPING RANGE. IF CLAMPING SURFACE IS GREATER THAN 1.50 A SPACER (NOT SHOWN) MAY BE ADDED UNDER THE CLAMP BODY TO ELEVATE THE CLAMP.

7.25 5.35

4.25 4.25 2.00 WIDTH WITHOUT HANDLE

2.77 1.75

.621 1.121

1 THE MODEL RC-428L IS A LOCKING ROCKER CLAMP WHICH MAY BE MOUNTED FIXED OR WITH A T-NUT. USE WITH MOLDS OR DIES HAVING A MOUNTING OR CLAMPING PLATE MADE FOR CLAMPING THE MOLD OR DIE. AFTER ACTUATING HYDRAULIC PRESSURE THE MECHANICAL LOCK IS ADVANCED UNTIL FULLY ENGAGED TO THE BASE. HYDRAULICS ARE THEN REMOVED AND THE CONTROLLER (PUMP) IS DISCONNECTED. THE MECHANICAL LOCK RETAINS THE CLAMPING FORCE. HYDRAULIC PRESSURE NEEDS TO BE REAPPLIED AT AN EQUAL OR GREATER PRESSURE TO LOOSEN THE LOCK SCREW AND RELEASE THE CLAMP.

OPTIONAL HANDLE .50 NOSE SPACER BAR IF REQUIRED

3 THE STUD IS SECURED TO THE T-NUT AT THE TIME OF INSTALLATION SO THAT THE GAP BETWEEN THE T-NUT AND THE T-SLOT IS MINIMIZED YET ALLOWING THE CLAMP TO BE MOVED EASILY. USE PERMANENT THREAD LOCKING COMPOUND AND/OR OTHER MEANS OF ENSURING THAT THE STUD DOES NOT ROTATE IN THE T-NUT. 2 CLAMPING FORCE IS 8,000 LBS. AT MAXIMUM HYDRAULIC PRESSURE OF 5000 PSI.

4.50

MECHANICAL LOCK

4.69

1.14 MAX

1.55

7/16-20UNF 37° FLARE

4.13

.620

2.880

STUD

MODEL 428 ROCKER CLAMP RC-428L

PAGE 1 OF 1

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N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com


CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the company’s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

7 6

7

APPLY MAGNA-LUBE 'G' TO SEALS AND MOVING PARTS WHEN ASSEMBLING.

6

THIS SPACER PLATE (NOT SHOWN) FOR ACHIEVING HIGHER CLAMP GRIP IS AVAILABLE AS A SEPARATE LINE ITEM.

5

THIS PART IS STANDARD AND SHIPPED WITH ALL CLAMPS. OTHER SIZES PER APPLICATION ARE SHIPPED IN ADDITION.

4

NOTE SEAL ORIENTATION (CRITICAL) (SEE SHEET 2)

3

THIS COLUMN SHOWS PARTS INCLUDED IN THE REFURBISH KIT (PART# 428LPD-RFB)

2

THIS COLUMN SHOWS PARTS INCLUDED IN THE SEAL KIT (PART# 428LPD-SEAL)

1

THIS COLUMN SHOWS PARTS INCLUDED IN THE BASIC MODEL-428L CLAMP. (REFERENCE ONLY).

5

4

1 1 2 1 1 1 1 2 -

1 1 1 1 -

QTY RFB

3

1 REF 1 2 2 4 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 QTY

QTY SEAL

2

REF

3613 428LUG 3740-XX 1185-5 1604-12 3617-TAB 1687-8 3690 3600 3840 3582 3581 3583 3580 2816-1 2814-100 1804-1 1785 1657-4 1658-16 1700-4 1620-6 L4255 3426 3436 3597 3598

BOTTLE W/CAP & MAGNA-LUBE 'G' USER GUIDE SPACER PLATE-GUIDE (NOT SHOWN) SPACER BAR (NOT SHOWN) ROLL PIN, .125Ø X .75 TEE NUT/STUD ASSY SCREW, SHC, 10-24 X .50 LG HANDLE ASSEMBLY (OPTIONAL) LOCK NUT BUSHING, SLEEVE .75 ID RETAINING RING, SPIRAL GUIDE BUSHING, PISTON PISTON SEAL PISTON, 1.186Ø REST BUTTON LOCK SCREW ASSY, 5/8-18UNC CONNECTOR, 1/8NPT - 37° FLARE PIPE PLUG, 1/8-27NPT SET SCREW, 8-32 X .25 (SOFT TIP) SCREW, SET, 8-32 X 1.00 SPRING, EXTENSION SCREW, SHC 10-32UNC X .375 LNG LOCK PLATE, HEX NUT WASHER, BELLEVILLE, .762 ID ROCKER BAR LID BASE

PART NUMBER

DESCRIPTION

27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 ITEM

1

UNLESS OTHERWISE SPECIFIED ALL DIMENSION TOLERANCES ARE IN INCHES TOLERANCES ARE; FRACTION DECIMAL

ANGLR

MODEL 428 ROCKER CLAMP RC-428LPD

PAGE 1 OF 2

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N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com


CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the company’s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

6 12

5

19

4

4

8

3

SEALS MUST BE INSTALLED AS SHOWN GAP DOWN

9

2 13 7

17 16

23 11

15 14

20

A

21 18 VIEW

1

VIEW SCALE 3:1

A

10 22

MODEL 428 ROCKER CLAMP RC-428LPD

PAGE 2 OF 2

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N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com


CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the company’s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

FLEXIBLE HOSE TO CLAMPS 4 PLACES

HOSE OR RIGID TUBE

BOLSTER OR RAM

4. ALL PFA QDC APPLICATION AND USE RECOMMENDATIONS ARE ADVISORY ONLY. PRODUCT SELECTION AND USE SHOULD BE IN ACCORDANCE WITH CUSTOMER SAFETY STANDARDS. PROPER FORM, FIT AND FUNCTION ARE THE RESPONSIBILITY OF THE CUSTOMER. 3. USE WITH PRESSURE SENSOR TO STOP PRESS IF HYDRAULIC PRESSURE DROPS BELOW PRESET LEVEL.

TO HYDRAULIC PUMP CONTROL (HC) WITH TWO CIRCUITS (2 ZONE), CHECKED SUPPLY AND LOW PRESSURE CUTOFF SENSOR/SWITCH EXAMPLE: PFA MODEL HC-120S-PS

2. HYDRAULIC CHECK VALVE LOCATED AT CONTROL VALVE FOR EACH CIRCUIT. 1. CLAMPS POWERED BY INDEPENDENT DIAGONALLY OPPOSITE HYDRAULIC CIRCUITS (ZONES). LOSS OF PRESSURE IN ONE CIRCUIT DOES NOT AFFECT THE OTHERS. NOTES: UNLESS OTHERWISE SPECIFIED

CLAMPSAFE 1 HYDRO CIRCUITS DIAGONAL

PAGE 1 OF 3

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N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com


CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the company’s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

FLEXIBLE HOSE TO CLAMPS 6 PLACES

HOSE OR RIGID TUBE

BOLSTER OR RAM

4. ALL PFA QDC APPLICATION AND USE RECOMMENDATIONS ARE ADVISORY ONLY. PRODUCT SELECTION AND USE SHOULD BE IN ACCORDANCE WITH CUSTOMER SAFETY STANDARDS. PROPER FORM, FIT AND FUNCTION ARE THE RESPONSIBILITY OF THE CUSTOMER. 3. USE WITH PRESSURE SENSOR TO STOP PRESS IF HYDRAULIC PRESSURE DROPS BELOW PRESET LEVEL. 2. HYDRAULIC CHECK VALVE LOCATED AT CONTROL VALVE FOR EACH CIRCUIT.

TO HYDRAULIC PUMP CONTROL (HC) WITH TWO CIRCUITS (2 ZONE), CHECKED SUPPLY AND LOW PRESSURE CUTOFF SENSOR/SWITCH EXAMPLE: PFA MODEL HC-120S-PS

1. CLAMPS POWERED BY INDEPENDENT DIAGONALLY OPPOSITE HYDRAULIC CIRCUITS (ZONES). LOSS OF PRESSURE IN ONE CIRCUIT DOES NOT AFFECT THE OTHERS. NOTES: UNLESS OTHERWISE SPECIFIED

CLAMPSAFE 1 HYDRO CIRCUITS DIAGONAL

PAGE 2 OF 3

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N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com


CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the company’s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

FLEXIBLE HOSE TO CLAMPS 8 PLACES

HOSE OR RIGID TUBE

BOLSTER OR RAM

4. ALL PFA QDC APPLICATION AND USE RECOMMENDATIONS ARE ADVISORY ONLY. PRODUCT SELECTION AND USE SHOULD BE IN ACCORDANCE WITH CUSTOMER SAFETY STANDARDS. PROPER FORM, FIT AND FUNCTION ARE THE RESPONSIBILITY OF THE CUSTOMER. 3. USE WITH PRESSURE SENSOR TO STOP PRESS IF HYDRAULIC PRESSURE DROPS BELOW PRESET LEVEL.

TO HYDRAULIC PUMP CONTROL (HC) WITH TWO CIRCUITS (2 ZONE), CHECKED SUPPLY AND LOW PRESSURE CUTOFF SENSOR/SWITCH EXAMPLE: PFA MODEL HC-120S-PS

2. HYDRAULIC CHECK VALVE LOCATED AT CONTROL VALVE FOR EACH CIRCUIT. 1. CLAMPS POWERED BY INDEPENDENT DIAGONALLY OPPOSITE HYDRAULIC CIRCUITS (ZONES). LOSS OF PRESSURE IN ONE CIRCUIT DOES NOT AFFECT THE OTHERS. NOTES: UNLESS OTHERWISE SPECIFIED

CLAMPSAFE 1 HYDRO CIRCUITS DIAGONAL

PAGE 3 OF 3

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N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com


CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the company’s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

MODEL 392, MODEL-4197-3 C CHECK VALVE ASSEMBLY SCALE 2:1 1/4-20 SCREW

1

0.75 TOP VIEW 1.50 1.00

2

0.25

1

Model 201

Model 201

0.43

CLAMP

STUD

TO CLAMP

2.25

PFA, INC. Ph: 262-250-4410

DIE SUB-PLATE

P

P/T

PRESSURE CIRCUITS

1.39

CHECK VALVE P/N 4197-3 C

RELEASE

TO CLAMP

TO NEXT CLAMP

TO CLAMP

PFA, INC. Ph: 262-250-4410

PFA, INC. Ph: 262-250-4410

PRESSURE

PRESSURE

CIRCUITS

CIRCUITS

CHECK VALVE P/N 4197-3 C

CHECK VALVE P/N 4197-3 C

RELEASE

RELEASE

TO NEXT CLAMP FRONT VIEW

PILOT CIRCUIT (PC) 5,000 PSI HYDRAULIC PRESSURE TO CLAMP (STEEL TUBE OR HOSE) 5,000 PSI HYDRAULIC PILOT CIRCUIT TO OPEN CLAMP (STEEL TUBE OR HOSE)

2

FLEXIBLE HOSE TO CLAMP.

1 CLAMP SHOWN IN THESE SCHEMATICS IS A MODEL-201 HYDRAULICALLY ACTUATED SPRING RELEASE DESIGN. SCHEMATIC APPLIES TO ALL CLAMPS WITH EXTERNALLY MOUNTED PILOT OPERATED CHECK VALVES. NOTES: UNLESS OTHERWISE SPECIFIED

CLAMPSAFE 3 HYDRO CIRCUIT W/ CHECK VALVES

PAGE 1 OF 3

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N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com


CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

RELEASE

RELEASE

CHECK VALVE P/N 4197-3 C

CHECK VALVE P/N 4197-3 C

CIRCUITS

CIRCUITS

PRESSURE

PRESSURE PFA, INC. Ph: 262-250-4410

PFA, INC. Ph: 262-250-4410

TO CLAMP

TO CLAMP

FLEXIBLE HOSES TO EACH CLAMP

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the company’s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

HOSE OR RIGID TUBE

6

PILOT CIRCUIT

CLAMP

8 CLAMPING CIRCUIT

T-SLOT

7 BOLSTER OR RAM

10 T-OFF TO CONNECT PRESSURE SENSOR, IF USED. (SEE MORE DATA ON PAGE 3)

TO CLAMP PFA, INC. Ph: 262-250-4410

PRESSURE CIRCUITS

TO CLAMP PFA, INC. Ph: 262-250-4410

PRESSURE CIRCUITS

CHECK VALVE P/N 4197-3 C

CHECK VALVE P/N 4197-3 C

RELEASE

RELEASE

HYDRAULIC POWER AND CONTROL MODULE

8. IF THIS LINE BREAKS (PILOT CIRCUIT) IT MUST BE REPAIRED BEFORE CLAMPS CAN BE OPENED. (IN AN EMERGENCY, HOSE FITTINGS AT CLAMPS COULD BE REMOVED TO ALLOW HYDRAULIC FLUID TO ESCAPE AND THE CLAMPS TO OPEN.) 7. IF THIS LINE BREAKS ALL CLAMPS WILL RETAIN CLAMPING PRESSURE. IF INSTALLED, PRESSURE SWITCH WILL STOP PRESS. 6. IF THIS HOSE BREAKS THIS CLAMP WILL OPEN BUT ALL OTHER CLAMPS RETAIN CLAMPING PRESSURE. IF INSTALLED, PRESSURE SWITCH WILL SENSE PRESSURE DROP AND STOP PRESS. 5. USE WITH PRESSURE SENSOR TO STOP PRESS IF HYDRAULIC PRESSURE DROPS BELOW PRESET LEVEL. PRESSURE SENSOR IS TYPICALLY PROVIDED ON MAIN PRESSURE LINE IN CONTROLLER (PS). PRESSURE SENSORS CAN BE CONNECTED TO INDIVIDUAL CIRCUITS AS DESIRED (SEE PAGE 3).

10. MANIFOLD P/N 1068 CAN BE INSTALLED ANYWHERE ALONG THE CLAMPING AND RELEASE CIRCUITS. 9. ALL PFA QDC APPLICATION AND USE RECOMMENDATIONS ARE ADVISORY ONLY. PRODUCT SELECTION AND USE SHOULD BE IN ACCORDANCE WITH CUSTOMER SAFETY STANDARDS. PROPER FORM, FIT AND FUNCTION ARE THE RESPONSIBILITY OF THE CUSTOMER.

4. NOTE THAT CHECK VALVE IS INSTALLED NEAR EACH CLAMP. 3. CLAMPS ARE POWERED BY THE CLAMPING CIRCUIT AND OPENED BY THE PILOT CIRCUIT. NOTES: UNLESS OTHERWISE SPECIFIED

CLAMPSAFE 3 HYDRO CIRCUIT W/ CHECK VALVES

PAGE 2 OF 3

REV -

N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com


CONFIDENTIAL: The information shown on this sheet is confidential. Permission to use, reproduce or transmit in any way not specifically authorized is expressly withheld.

DISCLAIMER: Illustrative drawings, CAD models, and information described herein is proprietary intellectual property of PFA, Inc., accurate to the company’s knowledge at time of printing, and intended for reference only. Specifications are subject to change without notice. If the information obtained from this document is critical to a specific application, it should be confirmed by contacting PFA, Inc. PFA Terms of Sale apply.

TO CLAMP POWER

HOSE SAME CIRCUITRY AS ILLUSTRATED BELOW 1/4-20 MOUNTING HOLES

TO CLAMP PFA, INC. Ph: 262-250-4410

TO OTHER CHECK VALVES POWER (CLAMP) CIRCUIT

PRESSURE CIRCUITS CHECK VALVE P/N 4197-3 C

TO CLAMP CIRCUIT #1 RETURN

PILOT

POWER

CIRCUIT #2 (CLAMP) FROM POWER & CONTROL MODULE (RAM CLAMPS) CIRCUIT #2 (UNCLAMP) FROM POWER & CONTROL MODULE

CIRCUIT #1 (CLAMP) FROM POWER & CONTROL MODULE (BOLSTER CLAMPS)

RELEASE

TO OTHER CHECK VALVES PILOT (UNCLAMP) CIRCUIT

CLAMP RELEASE

PILOT

CIRCUIT #1 (UNCLAMP) FROM POWER & CONTROL MODULE

MODEL 4197-3 C PILOT OPERATED CHECK VALVE

PRESSURE SWITCH MAY BE WIRED NORMALLY OPEN OR NORMALLY CLOSED. IF A PLC IS USED PLC LOGIC MUST BE PROGRAMMED ACCORDINGLY. THE PRESSURE SWITCH MAY BE SET TO TRIP AT VARIOUS PRESSURES. RECOMMENDED RANGE IS 2500 PSI TO 3500 PSI WHEN SYSTEM IS OPERATED AT 5000 PSI. 12. A PRESSURE SWITCH MODULE IS USED WHEN A PRESSURE SENSOR IS INSTALLED ON EACH CIRCUIT, AS DESIRED. 11. THIS PAGE SHOWS A MODEL 4197-3 C CHECK VALVE INSTALLED WITH A MODEL-201 HYDRAULIC NUT AND OPTIONAL MODEL-382 PRESSURE SWITCH MODULE. TWO SEPARATE CLAMPING AND PILOT CIRCUITS ARE SHOWN (MORE CAN BE ADDED).

CIRCUIT #2

CIRCUIT #1

CONDUIT HERE

12 MODEL-382 PRESSURE SWITCH MODULE

SENSOR SWITCH (TWO) MODULES WITH THREE, FOUR OR GREATER NUMBER OF SENSORS ARE AVAILABLE.

CLAMPSAFE 3 HYDRO CIRCUIT W/ CHECK VALVES

PAGE 3 OF 3

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N118 W18251 Bunsen Drive, Germantown, WI 53022 | 262.250.4410 | pfa-inc.com


N118 W18251 Bunsen Drive Germantown,WI 53022 (262) 250-4410 • Fax (262) 250-4409

pfa-inc.com

PFA RC-428/428L User Guide  

PFA Model 428 & 428L Power Strap Rocker Clamp Quick Die Change (QDC) by PFA, Inc. in Germantown, WI

PFA RC-428/428L User Guide  

PFA Model 428 & 428L Power Strap Rocker Clamp Quick Die Change (QDC) by PFA, Inc. in Germantown, WI