Wichita Clutch 'Modevo' Modular Tension Brake - Manual (Page 3)

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)