Pre-roller standnew product

Safer die changing

PAT.

Pre-roller stand model PRM PAT.
6,000kN（600ton）Press machine

Die 2ton

One operator

Die 2 tonmovie Video introduction
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6,000kN press machine 2ton
The loding/unloaidng of diePre-roller stand model PRM PAT.
20,000kN（2,000ton）Press machine

Die 8ton

Pre-roller stand model PRM

20,000kN press machine 8ton
The loding/unloaidng of die

One operator

Pre-roller standmodel

PRM

PAT.

It has more excellent rigidity compared with pre-roller
and there is very little displacement under the loadso that the loading/unloading the die can be smoothly performed.

Pre-roller stand model PRM
6,000 kN press machine 2-rows model

Pre-roller stand model PRM
12,000 kN press machine 4-rows model

It can be carried in front of the machine and be easily mount/dismount by using an overhead crane,
a forklift and a hand pallet truck thereby 1 set of pre-roller stand is applicable for multiple press machines.

3Selection Criteria
In case the die weight is over 2ton, die width is over 1300mm and die travel is over 1250mm,pre-roller stand is recommendable.
Die travel more than 1250 mm

Bolstermountingblock
PRM-A

Die width more than 1300 mm

Die weight more than 2 ton

Pre-roller standPRM1-1250

BolsterIntroduction effect (In case the die weight is 8ton)

Conventional

Pre-roller（PRC）

Die change：180 min.
Operators：3 persons

newPre-rollerstandDie change：45 min.
Operators：2 persons

In case the die weight is 5 ton

In case the die weight is 6 ton

Pre-roller（PRC5-1600×2）
Die change 30min 3 operators

Pre-roller（PRC5-1000×2）
Die change 60min
3 operators and a forklift 1machine

Pre-roller stand（PRM1-2000 2rows）
Die change 10min one operator

Pre-roller stand（PRM1-1600 4rows）
Die change 20min 2 operators

4

PRM

Durability

Rollers are hardly damaged when placing a die and smooth loading of die is maintainable for a long period
as the durability has been enhanced by strong structures.
By introducing a rigid structure with durable rollers and more resistant to impact when placing a die,smooth die transfer is maintainable for long period of time.

Roller

Pre-roller standPRM

modelBolster

Larger diameter of rollers are adopted to load/unload a die smoothly.

Width 50mm

Roller width isabout twice that of pre-roller

Width 26.3mm
Diameter ø80mm
Diameter
ø33mm

5

PRM

Installation, removal

Easy to carry and mount. It takes less time to install and remove.

Die travel：less than 1250mm
Carry and mount by hand pallet truck

Hand pallet truck
Pre-roller standmodel PRM1-1250

Bolster

Bolster mounting blockmodel PRM-A

Die travel：1600mm, 2000mm
Carry and mount by overhead crane ＊At installation

Pre-roller standmodel PRM

At removal

Pre-roller standmodel PRM

Bolster

Bolster

Bolster mounting blockmodel PRM-A
Bolster mounting block
PRM-A

model

＊A hand pallet truck (with 1510mm-long fork) is also useful to carry or mount.

6

PRM2-rows

PRM
111250

Number of roller frames
PRM1 ： 2-rows

2

Die travel 1250mm

PRM2 ： 4-rows

Die travel (mm)＊ Indicated in 4 digits

Model

PRM1-1250

Roller frame pitchmm

600 ～ 1600

Die travelmm

1250

Overall length of pre-roller standmm

1300

Mass ＊1Max. allowable loadkg

430

kN(ton)80(8)12Quantity of rollers
Bolster height

500 ～ 1300mm● Die loading speed on Pre-roller：Less than 50mm/s ● Die transfer speed：Less than 100mm/s＊1 Roller frame pitch for 1000mm,Bolster height 700mm. The mass of the bolster mounting block is not included.

Bolster edge ～ 1330

Hanger（Adjustable eye bolt LP-24)

Roller frame pitch

650

59

5×200 pitch

6115

5055

Die travel 1250

50

10Roller

ø80

140 8013575
M24

BolsterLevel adjuster

ø80

155415600

Level adjuster(To be used when removed from the machine.)759

Pre-roller standPRM1-1250

95

Bolster height(Refer to the above table)

Transfer level(Bolster height＋2)

Bolstermountingblock
PRM-AOverall length of pre-roller stand 1300

50Bolstermountingblock
PRM-A

66Bolster285

PRM4-rows

PRM
1

Number of roller frames2

Die travel (mm)

PRM1 ： 2-rows

Die travel 1250mm

21250

PRM2 ： 4-rows＊ Indicated in 4 digits

Model

PRM2-1250

Roller frame pitchmm

600 ～ 1600

Die travelmm

1250

Overall length of pre-roller standmm

1300

Mass ＊1
Max. allowable load

kg

640

kN(ton)80(8)24Quantity of rollers
Bolster height

500 ～ 1300mm

● Die loading speed on Pre-roller：Less than 50mm/s ● Die transfer speed：Less than 100mm/s＊1 Roller frame pitch for 1000mm,1400mm,Bolster height 700mm. The mass of the bolster mounting block is not included.
bolster edge ～ 1330

Bolster

Bolstermountingblock
PRM-A

50

6Bolstermountingblock
PRM-C
Overall length of pre-roller stand 1300
Die travel 1250

5050

Roller55

ø80135140 80

Pre-roller standPRM2-1250

85

Ｍ24

BolsterLevel adjuster
95

Bolster height(Refer to the above table)

10

Transfer level(Bolster height＋2)

Roller frame pitch Max.1600

Min.200
Min.200

Roller frame pitch Min.600

650

6Hanger（Adjustable eye bolt LP-24)

5×200 pitch

6115

155

ø80415600

285

Level adjuster(To be used when removed from the machine.)8

PRM2-rows

Die travel 1600mm

PRM
1

1600

Number of roller frames
PRM1 ： 2-rows

2

1

PRM2 ： 4-rows

Die travel (mm)＊ Indicated in 4 digits

Model

PRM1-1600

Roller frame pitchmm

600 ～ 1600

Die travelmm

1600

Overall length of pre-roller standmm

1650

Mass ＊1
Max. allowable loadkg

520

kN(ton)80(8)16Quantity of rollers
Bolster height

500 ～ 1300mm

● Die loading speed on Pre-roller：Less than 50mm/s ● Die transfer speed：Less than 100mm/s＊1 Roller frame pitch for 1000mm,Bolster height 700mm. The mass of the bolster mounting block is not included.

Bolster edge ～ 1680
150

135

Roller frame pitch

650596×200 pitch

6115

Bolster50

Bolstermountingblock
PRM-A
Overall length of pre-roller stand 1650

ø80

75
M24

Bolster

155

ø80
615

Level adjuster(To be used when removed from the machine.)

9Pre-roller standPRM1-1600

140 80135

Roller5050

105955

Die travel 1600

95

Bolster height(Refer to the above table)

Transfer level(Bolster height＋2)

Bolstermountingblock
PRM-A

66Hanger（Adjustable eye bolt LP-24)

600435Level adjuster

PRM

4-rowsPRM
121600

Number of roller frames
PRM1 ： 2-rows

2

Die travel 1600mm

PRM2 ： 4-rows

Die travel (mm)＊ Indicated in 4 digits

Model

PRM2-1600

Roller frame pitchmm

600 ～ 1600

Die travelmm

1600

Overall length of pre-roller standmm

1650

Mass ＊1
Max. allowable load

kg

770

kN(ton)80(8)32Quantity of rollers
Bolster height

500 ～ 1300mm● Die loading speed on Pre-roller：Less than 50mm/s ● Die transfer speed：Less than 100mm/s＊1 Roller frame pitch for 1000mm,1400mm,Bolster height 700mm. The mass of the bolster mounting block is not included.
Bolster edge ～ 1680
115

150 135

6Bolstermountingblock
PRM-C55

Overall length of pre-roller stand 1650
Die travel 1600

50

ø80

Pre-roller standPRM2-1600

135

140 80

Roller50

M24

Bolster95

Bolster height(Refer to the above table)

10

Roller frame pitch Max.1600

Bolstermountingblock
PRM-A

Min.200

Bolster

Transfer level(Bolster height＋2)

Min.200

650

Roller frame pitch Min.600

50666×200 pitch

Hanger（Adjustable eye bolt LP-24)

ø80

155
615
Level adjuster(To be used when removed from the machine.)

600

435
Level adjuster

10PRM2-rows

Die travel 2000mm

PRM
1

Number of roller frames2

Die travel (mm)

PRM1 ： 2-rows

12000

PRM2 ： 4-rows＊ Indicated in 4 digits

Model

PRM1-2000

Roller frame pitchmm

600 ～ 1600

Die travelmm

2000

Overall length of pre-roller standmm

2050

Mass ＊1
Max. allowable load

kg680

kN(ton)80(8)20Quantity of rollers
Bolster height

500 ～ 1300mm● Die loading speed on Pre-roller：Less than 50mm/s ● Die transfer speed：Less than 100mm/s＊1 Roller frame pitch for 1000mm,Bolster height 700mm. The mass of the bolster mounting block is not included.

Bolster edge ～ 2080
506150 135

50

Bolster

Roller frame pitch

59

68×200 pitch

6115

659

Hanger（Adjustable eye bolt LP-24)

Bolster mounting block
PRM-A

Bolster height(Refer to the above table)
140 809513510Overall length of pre-roller stand 2050

55

Die travel 2000

50Roller

ø80

Bolster mounting block
PRM-A

75

M24

155

ø80
615

1000
Level adjuster(To be used when removed from the machine.)

11Pre-roller standPRM1-2000

50

Transfer level(Bolster height＋2)435

Level adjusterPRM4-rows

Die travel 2000mm

PRM1

Number of roller frames2Die travel (mm)

PRM1 ： 2-rows

22000

PRM2 ： 4-rows＊ Indicated in 4 digits

Model

PRM2-2000

Roller frame pitchmm

600 ～ 1600

Die travelmm

2000

Overall length of pre-roller standmm

2050

Mass ＊1
Max. allowable load

kg

940

kN(ton)80(8)40Quantity of rollers
Bolster height

500 ～ 1300mm● Die loading speed on Pre-roller：Less than 50mm/s ● Die transfer speed：Less than 100mm/s＊1 Roller frame pitch for 1000mm,1400mm,Bolster height 700mm. The mass of the bolster mounting block is not included.
Bolster edge ～ 2080
8×200 pitch

Hanger（Adjustable eye bolt LP-24)

150 135

Bolstermountingblock
PRM-A
Bolstermountingblock
PRM-C

50Roller

Overall length of pre-roller stand 2050

55

Die travel 2000

50Pre-roller standPRM2-2000

ø80
50

Bolster height(Refer to the above table)
140 8095135Transfer level(Bolster height＋2)
106

Bolster

Roller frame pitch Max.1600

Min.200
Min.200

Roller frame pitch Min.600

650

66115

85
M24

155

ø80615

1000
Level adjuster(To be used when removed from the machine.)

435

Level adjuster

12

PRM-A / PRM-C

Bolster mounting block

Dimensions

Bolster mounting block

PRM-A
M16 depth 26

75

BolsterMounting bolts M16 length 85

200

Spring washer M16160

Spring pin

6860

14050

A

Mounting surface
height Over 200

80

20110

2-ø10 length 35
A

Bolster

A-A

Bolster

Bolster mounting block

PRM-C
For 4 rows (With PRM-A)

B

38

Spring washer M16

Mounting surface
height Over 200

Mounting bolts M16 length 95

146

100

Adjustment（0 ～ 11）

14085

65

Bolster

Set screw for adjustment

B

M20 length 65

Model

PRM-A

PRM-C

133

Mounting bolts

4-M16 length 85

2-M16 length 95

Spring pin

2-ø10 length 35--

1-M20 length 65Mass

Set screw for adjustment

13B-B

kgBolsterPRM-A-30 / PRM-C-30

Bolster mounting block with piping pocket

Dimensions

Use this block when Die lifter piping runs block mounting area
Bolster mounting block with piping pocket

PRM-A-30
Die-lifter

30

Bolster75

Extension block with a cover

Bolster mounting block
38

119
A72

Piping joint
BolsterMounting bolts M16 length 115

Bolster

Spring washer M16
Spring pin
2-ø10 length 65
A-A

A

Bolster mounting block with piping pocket

PRM-C-30
For 4 rows (With PRM-A)

Mounting bolts M16 length 125
Spring washer M16B

Set screw for adjustment
Ｍ20 length 65

B115

95

Bolster

Bolster

B-B＊Refer to PRM-A, PRM-C diagram for other dimensions which are not shown.

Model

PRM-A-30

PRM-C-30

15.6

4.2

Mounting bolts

4-M16 length 115

2-M16 length 125

Spring pin

2-ø10 length 65--

1-M20 length 65

Mass

Set screw for adjustmentkg

14

PRM-A(-30) / PRM-C(-30)

Bolster mounting block

Mounting Details

Bolster mounting block

PRM-A ／ PRM-A-30
Bolster upper surface

60

100

130±0.1

4-M16 depth 30

2-ø10 +0.15
depth 150160±0.1

Bolster mounting block

PRM-C ／ PRM-C-30
For 4 rows (With PRM-A)

160

Bolster upper surface

PRM-A-30

15

PRM-C-30

1002-M16 depth 30

PRM

Pre-roller Stand / BlockConnection

Hexagonal socket head cap screw
M16 length 175 (Included)

Pre-roller standZ
BolsterZ
Bolster mounting block

Adjusting shim (Included)
Adjusting amount：±2.5

Z-Z

ShimZ

Bolster

ZZ-Z

16

PRM-B

Level adjustment

The pre-roller stand can be shared by multiple machines.
Adjust the level by the adjuster.

Adjustingrange
35ｍｍ

Bolster heightFL

Level adjuster

Bolster height

Level adjuster

Adjuster upper end

Adjuster lower end

The installation of the base ( optional ) enables the level adjustment work eliminate.

Bolster height

FLBase
PRM-B

model

Max. base height 41.4

17

Bolster heightMax.
25.4ｍｍBasemodel PRM-B
Min. base height 16

PRM-B

Base (Option)

Dimensions / Mounting Details

Base

PRM-B

Level adjuster

16 ～ 41.4

Base60B

ø85

Mounting bolts：M8
Anchor bolt：#8CA
Base plate
Adjusting shim
t=63 pcs.
t=1
5 pcs.
t = 0.5 3 pcs.
t = 0.3 3 pcs.

ø120

B

B-B

ModelMax.mass

PRM-B
3.4kg

Mounting bolts

M8 ＊Anchor bolt

#8CA

＊The size varies depending on the base height.

Base height

Mounting bolts

16 〜 20

2-M8 length 16

20.1 〜 25

2-M8 length 20

25.1 〜 30

2-M8 length 25

30.1 〜 35

2-M8 length 30

35.1 〜 40

2-M8 length 35

40.1 〜 41.4

2-M8 length 40

18

For your safety operation using Pascal pre-rollers
Use of safety for Pre-rollers
Safety inspection and Precaution
Pascal has developed pre-rollers in 1970's and been supplying it since then as a simple andaﬀordable tool for die change operation.
It helps to pull the die out from the machine to the position where overhead crane or forklift
can reach, which is widely adopted in the market speciﬁcally for small and medium sized pressmachines.
However, the pre-roller is subject to the impact of load and its rollers are exposing a risk ofdamage due to operational error and die loading overspeed, also cracks or deformations are
not easily conﬁrmed visually. When the die change is performed under this state, pre-rollers
breaks and the die may be falling due to the damges which causes an accident resulting ininquiry or death.
Today the administrative responsibilities for labor accidents have been required more strictly.
From point of view of “Safety ﬁrst”, we, Pascal has decided to make the pre-roller with over
1250mm length obsolete and recommends the pre-roller stand being developed as analternative for the die change.
Industrial Safety and Health Act speciﬁes “The employer shall take necessary measures toprevent dangers due to machines, instruments and other equipments”, to ensure the safety ofemployees. In addition, Labor Contract Act also speciﬁes “The employer shall provide
suﬃcient consideration to ensure a healthy and safe working environment saving employee'sbody and life.”
When die change operation is performed by pre-rollers, please be sure to make safety
inspection before the operation and conﬁrm if die can be changed safely.
Safer die changing
Pre-roller

Pre-roller standDie stage

PA-593E REV.6 2023.08
Specifications are subject to change without prior notice.

CERTIFICATE OF APPROVAL ISO9001