Tension brakes/air cooled, Modevo tension brakes, Modevo model 250 – Wichita Clutch 'Modevo' Modular Tension Brake User Manual
Page 3: Maximum torques
Tension Brakes/Air Cooled
108
Wichita Clutch 800-964-3262
P-1100-WC 1/12
ModEvo Tension Brakes
ModEvo Model 250
**For intermittent duty, consult the factory.
1 Minimum torques were calculated using a multiplier of 0.6 for LC times Standard.
2 LC - Low Coefficient based on 0.2 Coefficient of friction.
3 Standard based on 0.35 Coefficient of friction.
4 Max. speed is with standard brake disc. A high speed brake disc capable of 50% higher speed is also available. Heat Capacity
reduced by 10% when high speed disc is used.
5 Limit LC to 70% of heat capacity.
6 When selecting number of actuators, use a limit of 3.35 HP per actuator pair (2.5 kW per Actuator pair) for duty w/o fan and 3.75 HP per Actuator
pair (2.8 kW per Actuator pair) when fan cooled.
Note: Limit maximum operating temperatures of surfaces (rotor, friction pads, actuators, etc.) to 300°F or less.
Temperatures above 300°F may cause damage and failure of components. Failure to do so will void warranty.
* For single actuator operation torques for 250/1 are applicable.
Model
Minimum Torques
Minimum (3 PSI) (0.2 Bars)
1
lb.ft.(Nm)
LC
2
Std
3
LC
2
Std
3
LC
2
Std
3
25% Actuators
60% Actuators
100 % Actuators
250/1
0.6
0.93
1.3
2.2
2.2
3.7
(0.8)
(1.3)
(1.8)
(3)
(3)
(5)
250/2*
1.1
1.9
2.6
4.4
4.4
7.4
(1.5)
(2.5)
(3.6)
(6)
(6)
(10)
250/4*
2.2
3.7
5.3
8.8
8.8
14.7
(3)
(5)
(7.2)
(12)
(12)
(20)
250/6*
3.3
5.5
7.9
13.2
13.2
22
(4.5)
(7.5)
(10.8)
(18)
(18)
(30)
Maximum Torques
Maximum (87 PSI) (6 Bars)
lb.ft.(Nm)
250/1
15.8
27.5
37.8
66
63
110
(21.3)
(37.3)
(51)
(89.4)
(85)
(149)
250/2*
31.3
53.25
75
127.8
125
213
(42.5)
(72.3)
(102)
(173.4)
(170)
(298)
250/4*
62.8
110
150.6
264
251
440
(85)
(149)
(204)
(357.6)
(340)
(596)
250/6*
94
164.8
225.6
395.4
376
659
(127.5)
(223.5)
(306)
(536.4)
(510)
(894)
Inertia
Speed
4
Heat Capacity for Effective
Rotating
Model
6
Max.
Cooling Speeds
Parts
Weight
Continuous Duty
**
HP(kW)
5
lb.ft.
2
lbs.(kg)
(kbm
2
)
50
100
200
300
400
500
600
RPM
RPM
RPM
RPM
RPM
RPM
RPM
RPM
Total
Rotating
250/1
2250
Without Fan
27.337
1.34
1.61
2.14
2.68
3.08
3.49
3.62
(12.4)
250/2
2250
(1.0)
(1.2)
(1.6)
(2.0)
(2.3)
(2.6)
(2.7)
29.101
1.424
(13.2)
19.180
250/4
2250
With Electric Cooling Fan, 150 mm dia.
(0.060)
38.801
(8.7)
4.56
4.69
5.09
5.36
5.36
5.36
5.36
(17.6)
250/6
2250
(3.4)
(3.5)
(3.8)
(4.0)
(4.0)
(4.0)
(4.0)
48.772
(22.1)