Wichita Clutch Motor Brakes User Manual

Spring-Set Motor Brakes

• Failsafe protection — spring-set

• Long wear life

• Quick, smooth stopping

Available With
Taper Bore

High Torque Low Inertia
Design

Extra Thick Friction Discs
Provide Long Life

Multiple Spud
Airtube

Low Stress
Spined Hub

Fast Acting
Air Tube Design

Optional Foot
Mount

Wichita spring-set, air release Motor Brakes
are ideal for failsafe protection of process
equipment. Available in foot mounted and
C-face options, this improved design has
thicker friction discs for longer wear life.
The fast acting Spring-Set actuation assures
quick, smooth stops.

Quick, Simple Installation

114 Wichita Clutch 800-964-3262

P-1100-WC 1/12

Spring-Set Motor Brakes

Specifications

Slip Torque lb.in. .3 CF* *Do Not Exceed 90% Of Slip Torque Ratings —
Model Minimum Air-Tube Pressure Maximum Horsepower Per 100 RPM Release Pressure - PSI
Size PSI For Released Brake 60 PSI Duty 75 PSI Duty

ATD– 60 75 90 A B C D A B C D

106 MB 2,225 2,900 3,700 3 2.3 1.2 .6 4 3 1.5 .8
206 MB 4,300 5,600 7,200 6 4.4 2.3 1.1 8 5.7 3 1.5
108 MB 3,700 4,800 6,200 5.3 3.8 2 1 7 5 2.6 1.3
208 MB 7,100 9,100 12,000 10 7.3 3.8 2 13 9.3 5 2.5
111 MB 8,200 10,500 11,600 11.7 8.4 4.4 2.2 15 10.7 5.7 2.8
211 MB 15,600 20,000 22,200 22 16 8.4 4.2 28.6 20.5 11 5.4
114 MB 14,500 18,600 24,700 20 15 8 4 26.6 19 10 5
214 MB 27,600 35,400 46,300 39 28 15 7.5 50 36 19 9.5
118 MB 31,400 40,400 51,600 45 32 17 8.5 58 41 22 11
218 MB 60,000 77,000 100,000 86 61 32 16 110 79 41 21
124H MB 75,500 86,600 — 108 77 41 20 158 114 60 30
224H MB 137,000 161,200 — 196 140 74 37 308 222 117 58

* Max. recommended air pressure – 130 PSI

Model Max. Bore Total Hub & CP Hub & CP Effec.
Size 90 PSI Duty Rect. Key Wt. Wt. WR2 WR

ATD– A B C D Inches lbs. lbs. lb.ft.2 lbs.

106 MB 5 3.8 2 1 2 36.5 6.40 .24 14.0
206 MB 10 7.4 3.9 2 2 49.5 12.17 .46 18.34
108 MB 9 6.3 3.3 1.6 2-3/8 63.23 10.0 .55 26.78
208 MB 17 12.3 6.5 3.2 2-3/8 81.5 16.0 .72 32.03
111 MB 16.6 12 6.3 3.1 2-5/8 96.96 15.0 1.35 40.75
211 MB 37 26 14 7 2-5/8 136.0 30.0 2.60 59.05
114 MB 35 25 13 6.7 4-1/8 157.6 38 5.6 72.3
214 MB 66 47 25 12.5 4-1/8 209.6 65 11 95.3
118 MB 74 53 28 14 5-1/4 322 71 14.5 168
218 MB 143 102 54 27 5-1/4 444 113 27.6 215

124H MB 183 131 69 34 7 690 131 50 377
224H MB 346 248 131 65 7 874 260 101 482

† Weight of internal clutch parts for use in calculating clutch engagement time.

†

D

P-1100-WC 1/12

Wichita Clutch 800-964-3262 115

Spring-Set Motor Brakes

Component Parts

1. Socket Head Capscrews

2. Air Tube Holding Plate

3. I.D. Shims

4. Airtube

5. Socket Head Capscrews

6. Airtube Spring Plate

7. Springs

8. Spring Release Plate

9. O. D. Shims

10. Grooved Friction Disc
(grooved on one side)

116 Wichita Clutch 800-964-3262

11. Center Plate

12. Grooved Friction Disc
(grooved on both sides)

13. Center Plate

14. Grooved Friction Disc
(grooved on one side)

15. Hub

16. Ring

17. Backplate

18. Socket Head Capscrews

P-1100-WC 1/12