LIB 321

The Wichita Air-Tube Disc Brakes combines all the best features of the disc type clutch with all the advantages of direct air engagement. The simplest and most trouble-free method of applying air pressure is through direct axial pressure application by compressed air in a special composition full-circle tube.

Specifications

Assembly Number	7-021-300-100-0
Size	8 to 36
Drawing Number	D-740
Dynamic Torque Rating (80 psi/5.5 bar)	209662 lb·in 23265 Nm
Dynamic Torque Rating (100 psi/7 bar)	262078 lb·in 29610 Nm
Duty Factors A	416
Duty Factors B	320
Duty Factors C	166
Duty Factors D	83
Maximum Bore Size	6.00 in 152 mm
Maximum Air Pressure	130 psi 9 bar
Recommended Clearance	5/32-7/32 in
Balance Speed	650 rpm
Maximum RPM Standard Air Tube	1090
Maximum RPM Hi-speed Air Tube	1650
Swept Area	1086 in²
New Air Tube Volume	18.3 in³ 300 cm³
Worn Air Tube Volume	97.6 in³ 1599 cm³
Total Clutch Weight	N/A
Total Clutch Inertia	lb·ft² kg·m²
Weight Hub Center Plate	312 lb 141.5 kg
Dimension D	24.88 in 632 mm
Dimension E	N/A
Dimension F	7.13 in 181.1 mm
Dimension G	0.75 in 19.1 mm
Dimension H	11.75 in 298.5 mm
Dimension I	in 298.5 mm
Dimension J	0.31 in 7.9 mm
Number of Mounting Holes	12
Dimension L	21/32 in 16.7 mm
Dimension M	14.50 in 368.3 mm
Dimension N	9.00 in 228.6 mm
Dimension Q	0.75 in 19.1 mm
Dimensions	N/A
Minimum U	2.00 in 50.8 mm
Maximum U	6.00 in 152.4 mm
Manufacturer	Wichita Clutch
Actuation	Air Applied

Notes

Consult Factory for Special Assembly Number.
For mounting, use socket head capscrews conforming to the ASTM-574-97a.
(Consult factory for drawing before final layout.)