The Rowland Company
The Rowland Company
4900 North 20th St.
Philadelphia, PA 19144
Toll Free: (800) 925-8824
Phone: (215) 455-4900
Fax: (215) 455-8888
Email: rowland@rowland2.com
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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.
Low Inertia Air Tube Disc Brakes
Unit of Measure
Items Low Inertia Air Tube Disc Brakes
LIB 104
Low Inertia Air Tube Disc Brakes 		Low Inertia Air Tube Disc Brakes
LIB 204
Low Inertia Air Tube Disc Brakes 		Low Inertia Air Tube Disc Brakes
LIB 106
Low Inertia Air Tube Disc Brakes 		Low Inertia Air Tube Disc Brakes
LIB 206
Low Inertia Air Tube Disc Brakes 		Low Inertia Air Tube Disc Brakes
LIB 108
Low Inertia Air Tube Disc Brakes
Assembly Number N/A 7-004-100-803-0 N/A 7-004-200-801-0 N/A 7-006-100-203-0 N/A 7-006-200-200-0 N/A 7-008-100-108-0
Size N/A N/A N/A 42 to 60 6 N/A 42 to 60 6 N/A 8 to 36
Drawing Number N/A -100-901-9 N/A B-518 N/A -100-901-9 N/A D-465 N/A -100-900-9
Dynamic Torque Rating (80 psi/5.5 bar) N/A 800 lb·in90 Nm N/A 1600 lb·in90 Nm N/A 3160 lb·in340 Nm N/A 6320 lb·in680 Nm N/A 5600 lb·in620 Nm
Dynamic Torque Rating (100 psi/7 bar) N/A 1000 lb·in113 Nm N/A 2000 lb·in225 Nm N/A 3950 lb·in435 Nm N/A 7900 lb·in870 Nm N/A 7000 lb·in790 Nm
Duty Factors A N/A 1.6 hp/100 rpm N/A 3.2 hp/100 rpm N/A 6.2 hp/100 rpm N/A 12.5 hp/100 rpm N/A 11.1 hp/100 rpm
Duty Factors B N/A 1.2 hp/100 rpm N/A 2.4 hp/100 rpm N/A 4.4 hp/100 rpm N/A 8.8 hp/100 rpm N/A 8 hp/100 rpm
Duty Factors C N/A 0.6 hp/100 rpm N/A 1.2 hp/100 rpm N/A 2.2 hp/100 rpm N/A 4.4 hp/100 rpm N/A 4 hp/100 rpm
Duty Factors D N/A 0.3 hp/100 rpm N/A 0.6 hp/100 rpm N/A 1.1 hp/100 rpm N/A 2.2 hp/100 rpm N/A 2 hp/100 rpm
Maximum Bore Size N/A 1.00 in25 mm N/A 1.00 in25 mm N/A 2.00 in50 mm N/A 2.00 in50 mm N/A 2.25 in57 mm
Maximum Air Pressure N/A 130 psi9 bar
Recommended Clearance N/A 1/32 in N/A 1/16 in N/A 1/16-3/32 in N/A 3/32-5/32 in N/A 1/16-1/8 in
Balance Speed N/A 3325 rpm N/A 3325 rpm N/A 2225 rpm N/A 2225 rpm N/A 1675 rpm
Maximum RPM (Standard Airtube) N/A 5250 rpm N/A 5250 rpm N/A 3800 rpm N/A 3800 rpm N/A 2870 rpm
Maximum RPM (High Speed Airtube) N/A 5250 rpm N/A 5250 rpm N/A 5700 rpm N/A 5700 rpm N/A 4300 rpm
Swept Area N/A 17 in² N/A 34 in² N/A 39 in² N/A 78 in² N/A 56 in²
New Air Tube Volume N/A 0.9 in³14.8 cm³ N/A 0.9 in³14.8 cm³ N/A 1.8 in³30 cm³ N/A 1.8 in³30 cm³ N/A 3.4 in³56 cm³
Worn Air Tube Volume N/A 3.4 in³56 cm³ N/A 3.4 in³56 cm³ N/A 11.9 in³195 cm³ N/A 11.9 in³195 cm³ N/A 18.3 in³300 cm³
Total Brake (Weight) N/A 11.0 lb7 kg N/A 14.0 lb6 kg N/A 27.5 lb12 kg N/A 40.5 lb18 kg N/A 62 lb28 kg
Weight (Hub & Center Plate) N/A 1.54 lb0.7 kg N/A 3.88 lb1.8 kg N/A 6.40 lb2.9 kg N/A 12.17 lb5.5 kg N/A 11 lb5.0 kg
WR2/J=mr2 (Hub & Center Plate) N/A 0.021 lb·ft²0.001 kg·m² N/A 0.04 lb·ft²0.002 kg·m² N/A 0.24 lb·ft²0.010 kg·m² N/A 0.46 lb·ft²0.019 kg·m² N/A 0.54 lb·ft²0.023 kg·m²
Dimension A N/A N/A N/A 8.75 in222.3 mm N/A 8.75 in222.3 mm N/A 12.13 in308.1 mm
Bolt Hole Diameter B N/A N/A N/A 8.000 in203.20 mm N/A 8.000 in203.20 mm N/A 11.125 in282.58 mm
Dimension C N/A N/A N/A 7.377/7.379 in187.38/187.43 mm N/A 7.377/7.379 in187.38/187.43 mm N/A 8.375/8.378 in212.73/212.80 mm
Dimension D N/A N/A N/A 8.81 in223.8 mm N/A 8.81 in223.8 mm N/A 11.13 in282.7 mm
Dimension F N/A N/A N/A 2.00 in50.8 mm N/A 3.25 in82.6 mm N/A 2.00 in50.8 mm
Dimension G N/A N/A N/A 0.00 in0.0 mm N/A 0.00 in0.0 mm N/A 0.25 in6.4 mm
Dimension H N/A N/A N/A 3.75 in95.3 mm N/A 5.00 in127.0 mm N/A 4.56 in115.8 mm
Dimension J N/A N/A N/A 0.06 in1.5 mm N/A 0.06 in1.5 mm N/A 0.25 in6.4 mm
Number of Mounting Holes (L) N/A N/A N/A 4 N/A 4 N/A 6
Dimension L N/A N/A N/A 0.34 in8.6 mm N/A 0.34 in8.6 mm N/A 17/32 in13.5 mm
Dimension M N/A N/A N/A 4.19 in106.4 mm N/A 4.19 in106.4 mm N/A 5.38 in136.7 mm
Dimension N N/A N/A N/A 2.69 in68.3 mm N/A 2.69 in68.3 mm N/A 3.50 in88.9 mm
Dimension Q N/A N/A N/A 0.56 in14.2 mm N/A 0.56 in14.2 mm N/A 0.50 in12.7 mm
Dimension R (Number - Size) N/A N/A N/A 2 - 1/4 NPT N/A 2 - 1/4 NPT N/A 2 - 1/2 NPT
Dimension T N/A N/A N/A 2.00 in50.8 mm N/A 2.00 in50.8 mm N/A 2.25 in
Minimum U N/A N/A N/A 0.60 in15.2 mm N/A 0.60 in15.2 mm N/A 1.00 in25 mm
Maximum U N/A N/A N/A 2.00 in50.8 mm N/A 2.00 in50.8 mm N/A 2.00 in50.8 mm
Note N/A 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.)
Manufacturer N/A Wichita Clutch
Actuation N/A Air Applied