CNC machine tools and sheet metal machinery
Durma Hydraulic Downstroking Pressbrakes

Durma Hydraulic Downstroking Pressbrakes

The Durma, R Series, Synchro Hydraulic Pressbrake has material handling total ram control which allows the operator to program very slow pressing and return speeds when handling large sheets. This greatly improves handling the sheet as it is being pushed into the lower die to create the bend. By slowing the pressing speed down to a 'creep' you can virtually eliminate conventional sheet 'whip up'. This whipping effect can make it very difficult for the operator to handle the part.

Another advantage is you can program the ram to go up very slowly for a short distance, then stop and pause while the operator has a chance to take the sheet back under his control, instead of the ram simply releasing at the bottom and immediately returning to the top releasing the sheet so quickly it is difficult for the operator to handle.

This not only greatly improves material handling but can increase part quality by virtually eliminating 'dishing or bowling' around the bend area. It is also possible to program a delay or pause at the bottom which is useful in setting a bend in stainless or other exotic materials. 

Durma Hydraulic Downstroking Pressbrakes AD-R

Top Beam Guiding 
Double guides are long and accurate for easy sliding of top beam.

Durma Hydraulic Downstroking Pressbrakes AD-R

High Stroke - Daylight - Throat
AD-R machines offer wide spaces for ease of operation also reduces cycle times

Durma Hydraulic Downstroking Pressbrakes AD-R

Back Gauge 
Fingers' depth is calculated by CNC controller and executes X axis. Retraction is also a standard feature to acquire accurate parts. Back gauge fingers are easily adjusted on linear guides by ball integrated motion system.

Durma Hydraulic Downstroking Pressbrakes AD-R

Sliding Front Arms 
Quickset support arms are mounted on a linear guide way and ball bearing system that allows “finger tip” lateral adjustment of the front support arms. Vertical adjustment is also easily achieved.

 

   
 
1260
2060
25100
30100
30135
Bending force
 
ton
60
60
100
100
135
Bending Length
(A)
mm
1250
2050
2550
3050
3050
Distance between columns
(B)
mm
1050
1700
2200
2600
2600
Y Rapid speed
 
mm/sec
200
200
180
180
160
Y Working speed
 
mm/sec
10
10
10
10
10
Y Return speed
 
mm/sec
120
120
120
120
120
Daylight
(D)
mm
433
530
530
530
530
Table width
(G)
mm
104
104
104
104
104
Table height
(F)
mm
790
900
900
900
900
Stroke
(C)
mm
160
265
265
265
265
Throat dept
(E)
mm
365
410
410
410
410
Support Arms
 
amount
2
2
2
2
2
Back gauge finger blocks
 
amount
2
2
2
2
2
Speed of travel in X-axis
 
mm/sec
350
500
500
500
500
Travel in X-axis
 
mm
500
650
650
650
650
Motor power
 
kw
4
7.5
11
11
15
Oil tank capacity
 
lt
60
100
100
100
150
Length
(L)
mm
2490
3300
3800
4200
4200
Width
(W)
mm
1285
1650
1670
1670
1680
Height
(H)
mm
2375
2750
2750
2750
2750
Weight approx.
 
kg
3500
5850
8650
9250
10250

   
 
30175
30220
30320
37175
37220
Bending force
 
ton
175
220
320
175
220
Bending Length
(A)
mm
3050
3050
3050
3700
3700
Distance between columns
(B)
mm
2600
2600
2600
3100
3100
Y Rapid speed
 
mm/sec
120
120
100
120
120
Y Working speed
 
mm/sec
10
10
10
10
10
Y Return speed
 
mm/sec
100
100
100
100
100
Daylight
(D)
mm
530
530
630
530
530
Table width
(G)
mm
104
104
154
104
104
Table height
(F)
mm
900
900
900
900
900
Stroke
(C)
mm
265
265
365
265
265
Throat dept
(E)
mm
410
410
410
410
410
Support Arms
 
amount
2
2
2
2
2
Back gauge finger blocks
 
amount
2
2
2
2
2
Speed of travel in X-axis
 
mm/sec
500
500
500
500
500
Travel in X-axis
 
mm
650
650
650
650
650
Motor power
 
kw
18.5
22
37
18.5
22
Oil tank capacity
 
lt
250
250
250
250
250
Length
(L)
mm
4350
4250
4300
4950
4950
Width
(W)
mm
1700
1770
1820
1700
1770
Height
(H)
mm
2750
2900
3230
2900
2900
Weight approx.
 
kg
11250
12250
17250
17250
14100

   
 
40175
40220
40320
40400
Bending force
 
ton
175
220
320
400
Bending Length
(A)
mm
4050
4050
4050
4050
Distance between columns
(B)
mm
3600
3600
3600
3400
Approach speed
 
mm/sec
120
120
100
100
Bending speed
 
mm/sec
10
10
10
8
Return Speed
 
mm/sec
100
100
100
80
Daylight
(D)
mm
530
530
630
630
Table width
(G)
mm
104
104
154
154
Table height
(F)
mm
900
900
900
1040
Stroke
(C)
mm
265
265
365
365
Throat dept
(E)
mm
410
410
410
510
Support Arms
 
amount
2
2
2
2
Back gauge finger blocks
 
amount
2
2
2
2
Back gauge speed
 
mm/sec
500
500
500
350
Back gauge range
 
mm
650
650
650
750
Motor power
 
kw
18.5
22
37
37
Oil tank capacity
 
lt
250
250
250
450
Length
(L)
mm
5250
5250
5300
5750
Width
(W)
mm
1700
1770
1910
2110
Height
(H)
mm
2750
2900
3230
3540
Weight approx.
 
kg
12850
14750
20750
26750

   
 
60220
60320
60400
Bending force
 
ton
220
320
400
Bending Length
(A)
mm
6050
6050
6050
Distance between columns
(B)
mm
5100
5100
5100
Approach speed
 
mm/sec
100
100
100
Bending speed
 
mm/sec
10
10
8
Return Speed
 
mm/sec
100
100
80
Daylight
(D)
mm
530
630
630
Table width
(G)
mm
154
154
154
Table height
(F)
mm
1100
1100
1220
Stroke
(C)
mm
265
365
365
Throat dept
(E)
mm
410
410
510
Support Arms
 
amount
4
4
4
Back gauge finger blocks
 
amount
4
4
4
Back gauge speed
 
mm/sec
350
350
350
Back gauge range
 
mm
750
750
750
Motor power
 
kw
22
37
37
Oil tank capacity
 
lt
250
250
500
Length
(L)
mm
7500
7500
7500
Width
(W)
mm
1770
1910
2110
Height
(H)
mm
3250
3450
3710
Weight approx.
 
kg
20590
28250
35750

Specifications subject to change without notice

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