Wichita Clutch Mechanical Power Take-Offs - Manual (Page 4)

Power Take-Off Clutches
148 Wichita Clutch 800-964-3262 P-1100-WC 1/12
Note: For mounting, use socket head capscrews conforming to the ASTM-574-97a.
Support plate must be perpendicular to side load pull.
Mechanical Side Load PTO (Truck Flywheel)
Size 15-1/2" Flat
Allowable Side Load (lbs.)
X RPM
Dimension 1000 1200 1800 2200 2400
11 in. 11,100 10,700 9,500 8,900 8,200
12 in. 10,000 9,500 8,500 8,000 7,400
13 in. 9,000 8,600 7,600 7,200 6,600
14 in. 8,200 7,800 7,000 6,500 6,100
15 in. 7,500 7,000 6,300 6,000 5,600
16 in. 7,000 6,600 5,800 5,500 5,300
17 in. 6,400 6,100 5,400 5,100 4,800
18 in. 6,000 5,700 5,000 4,700 4,400
19 in. 5,600 5,300 4,700 4,400 4,200
20 in. 5,400 5,200 4,500 4,200 4,000
Clutch Engine Manufacturers
Size Common Truck Flywheels*
Caterpiller Cummins Detroit
14" Pot FW1101
5129650
5101878
15-1/2" Flat
9N3136
FW1134 5138863
4W6800
* Check with engine manufacturer for flywheel compatibility.
Engine Flywheel Housing SAE Standards
SAE Bolt Circle Tapped
Size A B C D Holes
No. in. in. in. in. No. Size
00 31.000/31.010 34-3/4 33-1/2 3-15/16 16 1/2-13
0 25.500/25.510 28 26-3/4 3-15/16 16 1/2-13
1/2 23.000/23.008 25-1/2 24-3/8 3-15/16 12 1/2-13
1 20.125/20.130 21-3/4 20-7/8 3-15/16 12 7/16-14
2 17.625/17.630 19-1/4 18-3/8 3-15/16 12 3/8-16
3 16.125/16.130 17-3/4 16-7/8 3-15/16 12 3/8-16
4 14.250/14.255 15-7/8 15 3-15/16 12 3/8-16
5 12.375/12.380 14 13-1/8 2-13/16 8 3/8-16
6 10.500/10.505 12-1/8 11-1/4 2-13/16 8 3/8-16
For flywheel standards consult the SAE standards manual.