Page 1

MODEL 835 & 835L 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.

S3011 RC-825+825L-QDC REV A - 3/18


TABLE OF CONTENTS 1. Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Drawing: 835L Power Strap Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4. Drawing: 835LPD Refurbish and Seal Kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5. Operation - Die Exchange Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7. Seal Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 8. Spring, Belleville Replacement Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 9. Recommended Spare Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 10. DWG CLAMPSAFE-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 11. DWG CLAMPSAFE-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

pfa-inc.com RC-835+835L-QDC | ROCKER CLAMP | PAGE 3


DESCRIPTION 1. Please refer to drawing 835L and 835LPD. 2. The Model 835 and 835L are adjustable rocker clamps with the piston, Item 9, located at the rear of the clamp and pushing downward on a support plate, Item 21. 3. The mechanical locking ring, Item 15 (835L only), is threaded on the piston, and when screwed tightly against Body, Item 11, retains clamping force when hydraulic pressure is shut off. Model 835 are non-locking and require hydraulic pressure to be maintained at all times. 4. The clamp height adjustment knob, Item 14, is located on top of the clamp and is threaded on the Stud/T-nut Assembly, Item 22. 5. A compression spring, Item 17, located at the front of the clamp pushes against the support plate and keeps the clamp body, Item 11, elevated to the position set by the height adjustment knob. 6. When the height adjustment knob is turned clockwise, the front of the clamp moves downward. 7. When the height adjustment knob is turned counter clockwise, the front of the clamp is elevated until the full upward stroke is achieved. 8. At the full upward position, the stud must remain fully engaged in the height adjustment knob.

Note: When the clamp is adjusted in the full upward position, do not turn the knob any further unless the clamp is being disassembled.

INSTALLATION 1. Make sure that the T-Nut is sized correctly for the bolster T-slot and ram T-slot. 2. Make sure that the clamping height (stud length and spacing plate) is correct for the T-slot neck height . 3. To insert the clamp, compress the compression spring, Item 17, by squeezing the support plate against the clamp body. and insert clamp into the T-slot. 4. Connect hydraulic hose.

pfa-inc.com RC-835+835L-QDC | ROCKER CLAMP | PAGE 4


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

6.

CLAMPING HEIGHT ADJUSTMENT KNOB

CLH (in.)

Spacer (in.)

2.00 2.50 3.00

None 0.50 1.00

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.

Range (in.) 4.

5.

1 1/4 - 2 1/2 1 3/4 - 3 2 1/4 - 3 1/2

9.60

7.

1.33

MECHANICAL LOCK

8.

TO OPEN CLAMP REAPPLY HYDRAULIC PRESSURE AND ROTATE THE MECHANICAL LOCK AWAY FROM THE CLAMP BODY; THEN RELEASE HYDRAULIC PRESSURE.

7.

AFTER ACTUATING HYDRAULIC PRESSURE ROTATE MECHANICAL LOCK (HAND TIGHT) UNTIL IT IS FIRMLY IN CONTACT WITH THE CLAMP BODY. THE HYDRAULIC PRESSURE CAN THEN BE SHUT OFF.

6.

TO USE MOVE THE CLAMP TO DIE OR MOLD AND ROTATE THE HEIGHT ADJUSTMENT KNOB UNTIL THE FRONT OF THE CLAMP TOUCHES THE CLAMPING SURFACE.

5.

DO NOT CLAMP DIES OR MOLDS WITH A CLAMPING SURFACE LESS THAN 1¼" TO ENSURE THAT THE CLAMP IS FULLY PRE-LOADED WHEN HYDRAULIC PRESSURE IS APPLIED.

4.

DO NOT EXCEED 2½” CLAMPING HEIGHT UNLESS THE THICKNESS OF THE CLAMP SUPPORT PLATE HAS BEEN INCREASED ACCORDINGLY.

3.

MECHANICAL LOCK RETAINS CLAMPING FORCE WITHOUT HYDRAULIC PRESSURE.

2.

CLAMPING FORCE: 17,000 LBS. @ 5000 PSI

1.

OPERATING PRESSURE: 5,000 PSI MAX.

NOTES:UNLESS OTHERWISE SPECIFIED

3.77

.85

4.

6.40

MAX UPPER RANGE 2.47 1.25 5.

MIN LOWER RANGE

CLAMP SUPPORT PLATE

1.09 MAX GRIP DEPTH

(SPACERS ADDED TO INCREASE CLAMP HEIGHT)

MODEL 835L POWER STRAP CLAMP ITEM 835L

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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.

5.

23

4 6 6 6 24

5. 25

ITEM #5 SWIVEL FITTING ASSY

6

THESE ITEMS ARE PART OF THE SWIVEL ASSY, (ITEM 5)

5

INSTALL ITEM 20 AND ITEM 28 AND RETAIN WITH ITEM 1, 4 PLCS USING BREAKABLE LOCKTITE.

4

3

APPLY MAGNALUBE TO O'RINGS BACKUP RINGS AND MOVING PARTS WHEN ASSEMBLING. THIS COLUMN SHOWS PARTS INCLUDED IN REFURBISH KIT (PART# 835PD-RFB)

2

THIS COLUMN SHOWS PARTS INCLUDED IN SEAL REPLACEMENT KIT. (PART# 835PD-SEAL)

1

THIS COLUMN SHOWS PARTS INCLUDED IN THE BASIC MODEL-835L CLAMP (REFERENCE ONLY) NOTES: UNLESS OTHERWISE SPECIFIED

5.

1 1 1 2 2 1 1 1 1 1 1 -

1 1 1 2 2 1 -

1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 8 4

QTY

QTY

QTY

L9090-1 835UG 3613 6145-904-V75 1780-012 1293-012 8391-96 L8223P L8826-1 8852 8830 8829 8828 8681 8680 8679 8678 8677 8676 8821 7655 5184 3973-18 2578 1783-327 1768 1627-36 1611-8 PART NUMBER

SPACER PLATE USER GUIDE BOTTLE,W/MAGNALUBE G (NOT SHOWN) O'RING (V75) BACKUP RING, SPLIT O'RING (VITON) T-BOLT, FORGED, 1"-8UNC X 6.00 LG SUPPORT PLATE RETAINER PLATE THRUST FLANGE STEEL SHIM,1.125ID X 1.62ODX.062THK SPRING, 7/16OD X .072 WIRE Ă SPRING, 1.75OD X .177 WIRE Ă LOCK RING, 835 ADJUST KNOB, 835 SPRING GUIDE, 835 PLUNGER, 835 BODY, 835 CAP, 835 PISTON, 835 SPIRAL LOCK 1.066 OD X .046 THK SPHERICAL WASHER SET SPIROL LOCK, 1.059OD X .056 THK SWIVEL FITTING, MALE POLY O'RING BELLEVILLE WASHER SHCS, 5/16-18UNC X 2.25 LG BTHD SCREW, 1/4-20UNC X .50 LG

28 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

DESCRIPTION

RFB 3 SEAL 2 REF 1

REFURBISH & SEAL KITS MODEL 835L ITEM 835LPD

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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.

5 4 1

14

7

10

8 13

9 19

20

16

17

28

12

SECTION A-A

A

3

2

11 15

18 6 21

A

22 NOTES: UNLESS OTHERWISE SPECIFIED

REFURBISH & SEAL KITS MODEL 835L ITEM 835LPD

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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 (835L) clamps, hydraulics will need to be reconnected to reclamp, unlock, and release the clamps. PLEASE REFER TO DRAWING 835L AND 835LPD WHEN FOLLOWING THE SEQUENCE BELOW: 1. Jog ram to bottom of stroke and prepare for die removal. 2. For locked hydra-mechanical clamps (835L), 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 (835L), turn Locking Ring, Item #15, away from clamp body. 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 and make any required clamping height adjustment using Adjusting Nut, Item 14.

CAUTIONS: • Clamping point must touch die and be engaged fully - at least 1/2” • Limit clamping range as explained on DWG 835L – Power Strap Clamp. • The clamp must be perpendicular to or not more than 30˚ left or right of perpendicular to the die. • The stud, Item 22, must be visible above the surface of the Adjusting Nut, Item 14. 11. Apply 5,000 psi hydraulic pressure to bolster mounted clamps then to ram mounted clamps. 12. For Locking Clamps (835L), set Locking Ring, Item 15, by manually turning it on Piston, Item 9, until the Locking Ring is firmly in contact with clamp body. 13. For Locking Clamps (835L) only, release hydraulic pressure. 14. Examine all clamps for proper position and confirm that all clamps are engaged by attempting to move them manually.

pfa-inc.com 15. Commence stamping when ready.

RC-835+835L-QDC | ROCKER CLAMP | PAGE 8


MAINTENANCE 1. Periodically check hoses for signs of wear. 2. Replace hoses if necessary. 3. Examine clamps for damage. 4. Check mechanical locking rings to make sure that 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 procedures. 8. If a pipe thread fitting is removed, apply new thread tape before reassembling fitting.

pfa-inc.com RC-835+835L-QDC | ROCKER CLAMP | PAGE 9


SEAL REPLACEMENT PROCEDURE CAUTION: WEAR SAFETY GLASSES PLEASE REFER TO DRAWING 835LPD AND DO THE FOLLOWING: 1. Remove Retainer Plate, Item 20 and screws, Item 1. Unscrew height adjustment knob, Item 14 from stud assembly to remove Support Plate, Item 21. 2. Remove Washers, Item 7. Remove Retaining Ring, Item 6, and Shim, Item 18, unscrew mechanical Locking Ring, Item 15. 3. Remove Swivel Joint, Item 5, from Cylinder Cap, Item 10 and disassemble. 4. To disassemble Cylinder Cap, Item 10 from Body, Item 11 remove, SHC Screws, Item 2 (8 places). 5. Remove Piston, Item 9, from Cylinder Cap by pulling on threaded shaft of Piston.

Note: The Locking Knob can be threaded onto the Piston and used as an aid to remove the piston. Note: Ensure all parts have been cleaned prior to assembly. Apply Magnalube-G to O’Rings, Backup Rings and all moving parts prior to assembly. 6. Install O’Rings and Backup Rings onto Piston and Swivel Joint per drawing.

Note: Ensure that the Backup Rings are on the correct side of the O’Rings. 7. Be careful when installing Piston into the Cylinder Cap so as not to damage O’Ring and Backup Ring. 8. Install new Spring, Item 16 and assemble Cap to Body and retain with new screws, Item 2 (8 places). Torque screws to 50 in lbs.

Note: The earlier style clamps with a pipe plug in the back of the body require an O’Ring between the Body and Cap.

pfa-inc.com RC-835+835L-QDC | ROCKER CLAMP | PAGE 10


9. Screw Locking Ring onto Piston Shaft and install Shim, Item 18 and Item 6, Retaining Ring. 10. Assemble Swivel Joint, Item 5, to Cylinder Cap and Torque to 100 in. lbs. 11. Assemble Spring, Guide and Support Plate. Insert the Stud Assembly through the Support Plate and the Body and Screw Adjustment Knob onto the Stud. 12. Assemble Bellville Washers, Item 3, and Special Washer, Item 7.

7

13. Screw Adjusting Nut, Item 14 onto stud, Item 22. Install Retaining Plates, Item 20 and 28, with screws using breakable Loctite. 14. Install in T-slot and using a clamp height block to simulate the die clamping plate, carefully apply 5000 psi. Check for leaks and proper operation

3 835L

RECOMMENDED SPARE PARTS MODEL-835LPD P/N

Description

Qty

Contact PFA

T-nut/Stud Assembly

1

835PD-RFB

Rebuild Kit

2

835PD-SEAL

Seal Kit

2

pfa-inc.com RC-835+835L-QDC | ROCKER CLAMP | PAGE 11


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

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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.

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

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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.

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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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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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

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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.

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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PFA RC-835/835L User Guide  

Model 835 & 835L Power Strap Rocker Clamp Quick Die Change (QDC) by PFA, Inc. of Germantown, WI

PFA RC-835/835L User Guide  

Model 835 & 835L Power Strap Rocker Clamp Quick Die Change (QDC) by PFA, Inc. of Germantown, WI