Page 1

MODEL 327 & 328 HYDRAULIC DIE LIFTER RAIL

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

pfa-inc.com Copyright Š2020 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.

S3102 DR-327/328 REV A - 2/20


TABLE OF CONTENTS 1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5. Recommended Spare Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6. Drawing 327W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7. Drawing 327W-ELP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 8. Drawing 328W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 9. Drawing 328W-ELP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 10. Drawing Slots. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

pfa-inc.com MODEL 327 & 328 | HYDRAULIC DIE LIFTER RAIL | PAGE 3


INTRODUCTION NOTE: This User Guide is written for the knowledgeable mechanic. 1. Both Models DR-327 and DR-328 have a common single inline cam roller configuration. 2. The Model DR-327 has a rectangular cross section and the Model DR-328 has a T-shaped cross section. 3. The Model DR-327 Die Lifter is the more universal model, as it may be mounted in either a T-slot or Rectangular slot. 4. The Model DR-328 Die Lifter is more limiting, as it must be mounted in a T-slot only. 5. Typical Wide Slots are 1” (1.060”) and Narrow Slots are 3/4” (.812”) which provide room on the sides for easy movement for nominal rail widths - Narrow (N) .800” or Wide (W) .995”. See SLOTS drawing for details on T-slot and Rectangular (U-slot) configurations. 6. Both are available in High Profile (HP) and Low Profile (LP) versions to accommodate a range of slot heights. Some sizes may be available in Extremely Low Profile (ELP) versions.

NOTE: The Model 327 and Model 328 are similar, except for rail body shape. 7. Lift height is controlled by custom piston strokes for rectangular rails and custom T or tab height for T shaped rails. Part numbers state tab or stroke, neck width, profile, and bracket types, as appropriate. 8. Movement: When hydraulic pressure is applied to the die lifter, downward facing pistons extend causing the die lifter to elevate. When the hydraulic pressure is turned off, the weight of the die will cause the die lifter to recess. 9. Lift Capacity: Maximum die weight per pair is 9,000 lbs per foot of die contact. For example a 36 inch die resting on a pair of 48” die lifters must not exceed 27,000 lbs. [36” = 3 ft x 9,000 lbs/ft = 27,000 lbs] 10. Please study drawings 327W and 328W, as appropriate.

pfa-inc.com MODEL 327 & 328 | HYDRAULIC DIE LIFTER RAIL | PAGE 4


INSTALLATION 1. Place the die lifter in the bolster T-slot and check for proper fit. A rectangular slot may be used for the Model 327. The bolster slot needs to be wide enough for unhampered up and down articulation. Also, remove any foreign material in the slot. 2. Check bolster slot for proper depth. When hydraulic pressure is applied the die lifter roller balls should be above the bolster surface by the amount requested at the time of order. Typically lift above surface ranges from .060� to .125� above the bolster surface. In the lowered position, the die lifter roller balls must be below the bolster surface. If existing bolster extensions (pre-rollers) are installed, the die lifter roller balls, when elevated, must be on the same plane with the extensions for a smooth transition. If bolster slot is too deep, a spacer may be placed on the bottom for height adjustment. 3. A end mounting bracket (EBK) on the end of the die lifter rail is often used to keep the die lifter from moving horizontally. An internal to slot bracket (IB) and extension fitting is also available to prevent movement, allowing rails to be centered in the slot for certain applications. 4. For end mounting brackets, please refer to enclosed drawings to drill and tap the 1/4-20 UNC holes in the bolster for mounting the bracket guides. Place the rail centered in the T-slot with the mounting bracket touching the side of the bolster. Make sure that the pistons are recessed. With the mounting bracket as a reference mark the drill point on each side of the mounting bracket using the left/right dimensions shown on drawings.

CAUTION: MAKE SURE THAT THE MOUNTING BRACKET IS RETAINED BY THE SCREWS WHEN THE DIE LIFTER IS IN THE FULL DOWN POSITION AND THAT THE DIE LIFTER IS FREE TO MOVE UP AND DOWN. 5. Secure the mounting bracket using the two screws furnished. Make sure the guide sleeve is placed over the screw prior to installation. 6. After proper positioning of the die lifters, attach the hydraulic hoses. In most cases, the die lifter circuit on PFA Power and Control Module provides the control and hydraulic pressure to operate the die lifters. 7. The die lifters are tested at the factory. Some hydraulic fluid will remain and minimize the amount of air in the die lifter. However, before using the die lifters make sure that the air is purged from the lines by repeatedly pressurizing and depressurizing the die lifters.

CAUTION: WHEN INSTALLING ANY HYDRAULIC EQUIPMENT TAKE CARE TO PREVENT ANY CONTAMINATION FROM ENTERING HYDRAULIC LINES. DO NOT USE BLACK PIPE TO CARRY HYDRAULIC FLUID.

pfa-inc.com MODEL 327 & 328 | HYDRAULIC DIE LIFTER RAIL | PAGE 5


OPERATION Please integrate the following steps into your approved QDC procedures. 1. Remove die clamps and make sure that the ram is away from the die. 2. Elevate die lifters by applying hydraulic pressure. 3. Roll die off bolster. 4. Roll next die onto bolster and make positioning adjustments. 5. Lower die lifters by turning off hydraulic pressure. 6. Clamp die.

CAUTION: MAKE SURE DIE LIFTER IS IN THE DOWN POSITION BEFORE CLAMPS ARE APPLIED.

pfa-inc.com MODEL 327 & 328 | HYDRAULIC DIE LIFTER RAIL | PAGE 6


MAINTENANCE 1. Should it become necessary to replace ball cartridges, hydraulic seals or pistons follow the steps listed below carefully and refer to illustration D1 and referenced (item) numbers in the spare parts section. 2. To replace a damaged ball cartridge remove the die lifter from the press and place the die lifter rail on a suitable work surface. Remove the steel retaining ring(s) and affected ball cartridge(s). Replace with new. 3. To replace a piston or lower piston seal do the following: a. Remove the SAE hex face plug, which covers the affected cylinder. (Replace it if necessary during reassembly). b. Turn the rail over (rollers down) and push the piston out carefully using a blunt pointed tool. Do not scratch cylinder wall. c. Replace the internal o-ring. d. Reassemble in reverse.

NOTE: If the piston for some very unusual reason has mushroomed on the underside of the rail it will be necessary to remove the enlarged diameter before attempting to push it out of the cylinder. In such a case push the piston all the way out from above and use a saw, file or other tool to cut off the enlarged area. Deburr the cut off end before pushing the piston out. 4. If the die lifter is assembled using two segments they may be separated as follows: a. Refer to illustration D-1 and remove two screws on one end of the plate which secure the two segments. b. Drive out both roll pins which secure the splice on top of the die lifter. c. Separate the two halves by pulling apart. Do not bend. d. O’rings and backup rings can now be replaced on the pipe connecting the two segments. Use an O’ring lubricant. e. Re-assemble carefully in reverse sequence.

ROLLER BEARING

ROLL PIN

CONNECTING SPLICE

O-RING PISTON

SCREW SPLICE PLATE BOTTOM

CONNECTING TUBE

pfa-inc.com MODEL 327 & 328 | HYDRAULIC DIE LIFTER RAIL | PAGE 7


RECOMMENDED SPARE PARTS 327W, 328W RAILS – LP (LOW PROFILE) P/N

Description

Qty

6892-XXX

Piston (specific to rail part number)

6

1783-113

O’Ring for Piston Seal

4

1788-4

Plug

4

1864-12

Roller Bearing

4

1600-14

1/4 Roll Pin

4

5655*

Connecting Tube

2

1772-007*

O’Ring

4

1782-007*

Backup Ring

4

6353

Bracket Assembly

1

* If applicable - only for rails with a splice

327W, 328W RAILS – HP (HIGH PROFILE) P/N

Description

Qty

7035-XXX

Piston (specific to rail part number)

6

1783-113

O’Ring for Piston Seal

4

1788-4

Plug

4

1864-12

Roller Bearing

4

1600-14

1/4 Roll Pin

4

5655*

Connecting Tube

2

1772-007*

O’Ring

4

1782-007*

Backup Ring

4

6353

Bracket Assembly

1

* If applicable - only for rails with a splice

pfa-inc.com MODEL 327 & 328 | HYDRAULIC DIE LIFTER RAIL | PAGE 8


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

MODEL# 327W-9 327W-12 327W-15 327W-24 327W-30 327W-36 327W-42 327W-48 327W-54 327W-60 327W-66 327W-72

DIM 'A' 9 12 15 24 30 36 42 48 54 60 66 72

# ROLLERS # PISTONS MAX LOAD 1 PER RAIL PER RAIL CAPACITY/PAIR 7,000 LBS 6 3 9,000 LBS 8 4 11,000 LBS 10 5 18,000 LBS 16 8 22,000 LBS 20 10 27,000 LBS 24 12 32,000 LBS 28 14 36,000 LBS 30 16 40,000 LBS 34 18 45,000 LBS 38 20 49,000 LBS 42 22 54,000 LBS 46 24 SEE CATALOG FOR OTHER AVAILABLE SIZES

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.

RIGID SPLICE N N N N N N N N Y Y Y Y

A

2

.995

0.50 FOR LOW PROFILE RAILS, 0.75 FOR HIGH PROFILE RAILS 2.120

2.120

5 3

MOUNTING BRACKET 1/4-20 UNC x .50 DEEP THREAD, (2) PLACES

5 4

1.495 (LP) 1.805 (HP) 1.77

4

.36 MAXIMUM PISTON TRAVEL, LP RAIL (.385 REF.) .58 MAXIMUM PISTON TRAVEL, HP RAIL (.600 REF.)

ROLLER DISTANCE ABOVE RAIL BODY IS .08 FOR LOW PROFILE AND .18 FOR HIGH PROFILE. EACH DIE LIFTER IS DESIGNED TO ELEVATE THE ROLLERS .080 ABOVE THE BOLSTER SURFACE (THE HYDRAULIC PISTONS ARE MACHINED TO ELEVATE THE RAIL UNTIL THIS .080 ELEVATION IS REACHED). SPECIFY OTHER DESIRED RAIL ELEVATION E.G., TO MATCH EXISTING BOLSTER EXTENSIONS.

3

THIS DIE LIFTER IS AVAILABLE IN LOW PROFILE (LP) AND HIGH PROFILE (HP). IF T-SLOT IS TOO DEEP ADD SPACER/SHIMS AS NECESSARY. DIMENSION IS FROM BOTTOM OF RAIL TO TOP OF ROLLERS.

2

LENGTHS SHOWN ARE TYPICAL, OTHER LENGTHS AVAILABLE. MODELS LONGER THAN 48" ARE MADE IN TWO OR MORE SECTIONS USING A STAINLESS STEEL SPLICE FOR A RIGID CONNECTION.

1

MAX LOAD CAPACITY PER PAIR IS AT 5,000 PSI. HYRAULIC PRESSURE AND ASSUMES THAT THE DIE FOOTPRINT IS PROPORTIONAL TO DIE LIFTER LENGTH.

THE MODEL-327 DIE LIFTER HAS A RECTANGULAR CROSS SECTION, CYLINDRICAL ROLLERS AND IS HYDRAULICALLY ACTUATED @5,000 PSI. MAX.

MODEL 327 HYDRAULIC DIE LIFTER RAIL 327W

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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.

MODEL# 328W-9-ELP 328W-12-ELP 328W-15-ELP 328W-24-ELP 328W-30-ELP 328W-36-ELP 328W-42-ELP 328W-48-ELP 328W-54-ELP 328W-60-ELP 328W-66-ELP 328W-72-ELP

# ROLLERS MAX LOAD 1 PER RAIL CAPACITY/PAIR 9 7,000 LBS 4 12 9,000 LBS 6 15 11,000 LBS 8 24 18,000 LBS 14 30 22,000 LBS 18 36 27,000 LBS 22 42 32,000 LBS 26 48 36,000 LBS 28 54 40,000 LBS 32 60 45,000 LBS 36 66 49,000 LBS 40 72 54,000 LBS 44 SEE CATALOG FOR OTHER AVAILABLE SIZES

DIM 'A'

# PISTONS PER RAIL

RIGID SPLICE

3 4 5 8 10 12 14 16 18 20 22 24

N N N N N N N N Y Y Y Y

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.

A

2

.995 0.50 FOR EXTRA-LOW PROFILE RAILS MOUNTING BRACKET 1/4-20 UNC x .50 DEEP THREAD, (2) PLACES

3 1.355 (ELP) 1.77

5

ROLLER DISTANCE ABOVE RAIL BODY IS .08" FOR THIS EXTRA-LOW PROFILE CONFIGURATION.

4

FLANGE THICKNESS IS MACHINED TO FIT CUSTOMER'S T-SLOTS AND POSITION ELEVATED ROLLERS .080" ABOVE BOLSTER SURFACE. OTHER ELEVATIONS ABOVE THE BOLSTER MAY BE SPECIFIED, E.G., TO MATCH EXISTING BOLSTER EXTENSIONS.

3

THIS DIE LIFTER IS AN EXTRA-LOW PROFILE (ELP) CONFIGURATION. IF T-SLOT IS TOO DEEP ADD SPACER/SHIMS AS NECESSARY. DIMENSION IS FROM BOTTOM OF RAIL TO TOP OF ROLLERS.

2

LENGTHS SHOWN ARE TYPICAL, OTHER LENGTHS AVAILABLE. MODELS LONGER THAN 48" ARE MADE IN TWO OR MORE SECTIONS USING A STAINLESS STEEL SPLICE FOR A RIGID CONNECTION.

1

5

2.120

2.120

MAX LOAD CAPACITY PER PAIR IS AT 5,000 PSI. HYRAULIC PRESSURE AND ASSUMES THAT THE DIE FOOTPRINT IS PROPORTIONAL TO DIE LIFTER LENGTH. LEAD AND ENDING ROLLERS ARE REMOVED TO ACHIEVE ELP HEIGHT, LOAD CAPACITY MAY BE AFFECTED FOR SHORTER RAILS.

1.50

4

.32 MAXIMUM PISTON TRAVEL, ELP RAIL (.340 REF.)

THE MODEL-328 DIE LIFTER HAS A T-PROFILE CROSS SECTION, CYLINDRICAL ROLLERS AND IS HYDRAULICALLY ACTUATED @5,000 PSI. MAX.

MODEL 328W DIE LIFTER EXTRA LOW PROFILE 328W-ELP

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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.

MODEL# 328W-21 328W-24 328W-30 328W-36 328W-42 328W-48 328W-54 328W-60 328W-66 328W-72

DIM 'A' 21 24 30 36 42 48 54 60 66 72

# ROLLERS # PISTONS MAX LOAD 1 PER RAIL PER RAIL CAPACITY/PAIR 16,000 LBS 14 7 18,000 LBS 16 8 22,000 LBS 20 10 27,000 LBS 24 12 32,000 LBS 28 14 36,000 LBS 30 16 40,000 LBS 34 18 45,000 LBS 38 20 49,000 LBS 42 22 54,000 LBS 46 24 SEE CATALOG FOR OTHER AVAILABLE SIZES

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.

RIGID SPLICE N N N N N N Y Y Y Y

A

2

.995 1.50

0.50 FOR LOW PROFILE RAILS, 0.75 FOR HIGH PROFILE RAILS 2.120

2.120 MOUNTNG BRACKET 1/4-20 UNC x .50 DEEP THREAD, (2) PLACES

5 4 3

5

1.495 (LP) 1.805 (HP)

3 1.77

ROLLER DISTANCE ABOVE RAIL IS .08 FOR LOW PROFILE AND .18 FOR HIGH PROFILE. FLANGE THICKNESS IS MACHINED TO FIT CUSTOMER'S T-SLOTS AND POSITION ELEVATED ROLLERS .080 ABOVE BOLSTER SURFACE. OTHER ELEVATIONS ABOVE THE BOLSTER MAY BE SPECIFIED. THIS DIE LIFTER IS AVAILABLE IN LOW PROFILE (LP) AND HIGH PROFILE (HP). IF T-SLOT IS TOO DEEP ADD SPACER/SHIMS AS NECESSARY. DIMENSION IS FROM BOTTOM OF RAIL TO TOP OF ROLLERS.

2

LENGTHS SHOWN ARE TYPICAL, OTHER LENGTHS AVAILABLE. MODELS LONGER THAN 48" ARE MADE IN TWO OR MORE SECTIONS USING A STAINLESS STEEL SPLICE FOR A RIGID CONNECTION.

1

MAX LOAD CAPACITY PER PAIR IS AT 5,000 PSI. HYDRAULIC PRESSURE AND ASSUMES THAT THE DIE FOOTPRINT IS PROPORTIONAL TO DIE LIFTER LENGTH.

4

.36 MAXIMUM PISTON TRAVEL, LP RAIL (.385 REF.) .58 MAXIMUM PISTON TRAVEL, HP RAIL (.600 REF.)

THE MODEL-328 DIE LIFTER HAS A T-PROFILE CROSS SECTION, CYLINDRICAL ROLLERS AND IS HYDRAULICALLY ACTUATED @5,000 PSI. MAX.

MODEL 328 HYDRAULIC DIE LIFTER RAIL 328W

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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.

MODEL# 328W-9-ELP 328W-12-ELP 328W-15-ELP 328W-24-ELP 328W-30-ELP 328W-36-ELP 328W-42-ELP 328W-48-ELP 328W-54-ELP 328W-60-ELP 328W-66-ELP 328W-72-ELP

# ROLLERS MAX LOAD 1 PER RAIL CAPACITY/PAIR 9 7,000 LBS 4 12 9,000 LBS 6 15 11,000 LBS 8 24 18,000 LBS 14 30 22,000 LBS 18 36 27,000 LBS 22 42 32,000 LBS 26 48 36,000 LBS 28 54 40,000 LBS 32 60 45,000 LBS 36 66 49,000 LBS 40 72 54,000 LBS 44 SEE CATALOG FOR OTHER AVAILABLE SIZES

DIM 'A'

# PISTONS PER RAIL

RIGID SPLICE

3 4 5 8 10 12 14 16 18 20 22 24

N N N N N N N N Y Y Y Y

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.

A

2

.995 0.50 FOR EXTRA-LOW PROFILE RAILS MOUNTING BRACKET 1/4-20 UNC x .50 DEEP THREAD, (2) PLACES

3 1.355 (ELP) 1.77

5

ROLLER DISTANCE ABOVE RAIL BODY IS .08" FOR THIS EXTRA-LOW PROFILE CONFIGURATION.

4

FLANGE THICKNESS IS MACHINED TO FIT CUSTOMER'S T-SLOTS AND POSITION ELEVATED ROLLERS .080" ABOVE BOLSTER SURFACE. OTHER ELEVATIONS ABOVE THE BOLSTER MAY BE SPECIFIED, E.G., TO MATCH EXISTING BOLSTER EXTENSIONS.

3

THIS DIE LIFTER IS AN EXTRA-LOW PROFILE (ELP) CONFIGURATION. IF T-SLOT IS TOO DEEP ADD SPACER/SHIMS AS NECESSARY. DIMENSION IS FROM BOTTOM OF RAIL TO TOP OF ROLLERS.

2

LENGTHS SHOWN ARE TYPICAL, OTHER LENGTHS AVAILABLE. MODELS LONGER THAN 48" ARE MADE IN TWO OR MORE SECTIONS USING A STAINLESS STEEL SPLICE FOR A RIGID CONNECTION.

1

5

2.120

2.120

MAX LOAD CAPACITY PER PAIR IS AT 5,000 PSI. HYRAULIC PRESSURE AND ASSUMES THAT THE DIE FOOTPRINT IS PROPORTIONAL TO DIE LIFTER LENGTH. LEAD AND ENDING ROLLERS ARE REMOVED TO ACHIEVE ELP HEIGHT, LOAD CAPACITY MAY BE AFFECTED FOR SHORTER RAILS.

1.50

4

.32 MAXIMUM PISTON TRAVEL, ELP RAIL (.340 REF.)

THE MODEL-328 DIE LIFTER HAS A T-PROFILE CROSS SECTION, CYLINDRICAL ROLLERS AND IS HYDRAULICALLY ACTUATED @5,000 PSI. MAX.

MODEL 328W DIE LIFTER EXTRA LOW PROFILE 328W-ELP

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.

U-SLOTS (RECTANGULAR)

'A'

'A'

T-SLOTS 'D'

NOMINAL SIZE

'E'

PRESS #

5

4 3

BOLSTER

'A' (±.010)

'E'

'E' (±.010)

3/4"

5 .840

1.510

1"

1.062

1.510

2"

2.030

2.200

'C' (REF)

.03

(ALLOWABLE) 'B'

2

WHEN MACHINING/REMACHINING 3/4" SLOTS USE .840 ±.010 FOR THE 'A' DIMENSION. THIS CREATES OPTIMUM FIT FOR THE DIE LIFTERS. (THE ANSI/ASME "A" DIM OF .812 WILL WORK AND DOES NOT NEED TO BE ENLARGED IN EXISTING SLOTS). THE T AND U SLOTS SHOWN ALLOW USE OF STANDARD PFA, INC. DIE LIFTERS, DIE CLAMPS AND ACCESSORIES. PFA, INC. PART NUMBERS FOR T-NUT SIZES ARE SHOWN. OTHER SIZES, INCLUDING SINGLE PIECE T-BOLTS ARE AVAILABLE.

2

THIS AREA MAY BE USED AS A WORKSHEET TO RECORD ACTUAL SLOT DIMENSIONS.

1

THIS IS A SELECTION OF T-SLOT SIZES WHICH CONFORM TO 'A' DIMENSIONS ESTABLISHED BY ASME B5.1M-1985, REAFFIRMED 2014. DIMENSIONS 'B', 'C' , 'D' AND 'E' ARE WITHIN MIN./MAX. ASME PARAMETERS.

NOMINAL T-BOLT SIZE

'A' (+.010 -.000)

'B' (+.03 -.00)

'C' (REF)

'D' (+.010 -.000)

'E' (±.010)

5/8"

.688

1.22

.50

.750

1.250

3/4"

.812

1.43

.63

.875

1.510

1.062

1.80

.80

1.000

1.805

1"

PRESS #

BOLSTER

PRESS #

RAM

1

2

*

*

* PLUS _______ CUTTER RELIEF, IF ANY. 'A' THREAD SIZE 'D' (REF) 'E' 'C'

'B'

T-NUT

3 PART#

SELECTED T-NUTS NOMINAL THREAD T-SIZE SIZE

'A'

'B'

'C'

'D' (REF)

'E'

1767-1

5/8"

5/8-11

.67

1.13

.42

.33

.75

1755-13

3/4"

3/4-10

.80

1.25

.56

.44

1.0

1755-16

1"

3/4-10

1.03

1.62

.63

.37

1.0

4983-16

1"

7/8-9

1.03

1.62

.69

.31

1.0

COMMON SLOTS T SHAPE & RECTANGULAR PAGE 1 OF 1

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PFA DR-327/328 Model 327 & 328 Hydraulic Die Lifter Rail