IMPERIAL
Bore Diameters (Inches)
Part #
Type of Gearbox
0.75" 0.875" 1" 1.125" 1.25" 1.5" 1.75" 2" 2.25" 2.5" 2.75"
202-153 4" BW, PRM, ZF Hurth Max Bore: 1.5"
B B B B
B B
B B
B B
B
P - Pilot drilled open tolerance B - Bored Only / Can be keyed BK - Bored and must be keyed
202-254 4" Yanmar Max Bore" 1.5" 202-255 4" Volvo Max Bore: 1.5" 202-489 4" Bukh Max Bore: 1.5"
202-168 5" BW, PRM, ZF Hurth, Volvo Max Bore: 2" 202-313 5" IRM 220, MG 502, Lister Max Bore 2"
P P P P P
B
B BK BK BK BK
Shaded area designates range of bores covered.
202-316 5" Yanmar Max Bore: 2" 202-176 6" PRM Max Bore: 2.5" 202-188 6" Twin Disc Max Bore: 2.5"
BK
BK BK BK BK BK BK
202-381 7.25" PRM 601, 1000 4:1 Max Bore: 2.75" 202-468 7.25" PRM 1500 Max Bore: 2.75"
P P P P
Note: Please contact PYI if shaft size is not listed.
202-469 7.25" Twin Disc Max Bore: 2.75" 202-470 7.25" ZF 311A Max Bore: 2.75"
METRIC
Bore Diameters (mm)
Part #
Type of Gearbox
22mm 25mm 30mm 35mm 40mm 45mm 50mm 55mm 60mm 70mm
202-153 4" BW, PRM, ZF Hurth Max Bore: 40mm
B B B
B B B
B B B
B
202-254 4" Yanmar Max Bore" 40mm 202-255 4" Volvo Max Bore: 40mm
202-489 4" Bukh Max Bore: 40mm 202-168 5" BW, PRM, ZF Hurth, Volvo Max Bore: 50mm 202-313 5" IRM 220, MG 502, Lister Max Bore 50mm 202-316 5" Yanmar Max Bore: 50mm
BK BK BK BK BK
BK BK
202-176 6" PRM Max Bore: 60mm 202-188 6" Twin Disc Max Bore: 60mm
BK BK BK BK BK
BK
BK
202-381 7.25" PRM 601, 1000 4:1 Max Bore: 70mm 202-468 7.25" PRM 1500 Max Bore: 70mm 202-469 7.25" Twin Disc Max Bore: 70mm 202-470 7.25" ZF 311A Max Bore: 70mm
A
E
G
Recommended torque specs: • M10 - 45ft. lbs. Supplied with clamp bolts and nuts: • Imperial Sizes: Keyways to BS46: Part 1 Square • Metric Sizes: Keyways to BS4235: Part 1 Rectangular
C & D
F
* Male register shown
Coupling Dimensions
Register Ø (E) M = Male * F = Female inches / mm
Hole Pitch Circle (B) inches / mm
Hole Size (D) inches / mm
Length (F) inches / mm
Boss Ø (G) inches / mm
Flange Ø (A) inches / mm
# of Holes (C)
Clamp Bolt Size
Part #
202-153 202-254 202-255 202-489 202-168 202-316 202-176 202-188 202-313 202-381 202-468 202-469 202-470
4 4 4
102 102 102
3.25 82.55
4 4 4 4 4 4 6 6 6 6 6 6 8
0.394 0.394 0.394
10
2.5 63.5
M M
3.19 3.19
81 81
3.38 85.9 3.38 85.9
M10 M10 M10
3.07 3.15
78 80
10 1.97
50
• 7/16” UNF - 60 ft. lbs. • 1/2” UNF - 75 ft. lbs. • 5/8” UNF - 155 ft. lbs.
10
2.36 1.85
60 F 47 F
3.28 85.8 3.38 85.9
3.54
90
2.93 74.5
0.32
8.1
3.28 85.8 3.38 85.9 5/16” UNF
5
127
4.25 3.94 4.75 4.75 3.88
107.94
0.44 11.2
2.5 63.5 2.56 65
M M
3.75 95.3 3.75 95.3
4.06 4.06
103.2 7/16” UNF
4.72 119.9
100
0.394
10
103.2
M10
5.75 5.75
146 146 127
120.6 120.6
0.5
12.7
3 3
76.2 M 76.2 F
5.5 139.7 5.38 136.7 1/2” UNF 5.5 139.7 5.38 136.7 5/8” UNF
0.63
16
5
98.6
0.47 12
2.5 63.5 3.75 95.25 3.75 95.25 3.75 95.25 3.75 95.25
F
5.63 143
4.06
103.2 168.4 168.4 168.4 168.4
M12
7.45 7.45 7.45 7.45
189.2 6 189.2 6 189.2 6 189.2 6
152.4 152.4 152.4 152.4
0.63 0.63 0.75 0.63
16 16 19 16
M
7.5 190.5 6.63 7.5 190.5 6.63 7.5 190.5 6.63 7.5 190.5 6.63
5/8” UNF 5/8” UNF 3/4” UNF 5/8” UNF
F F F
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