Manual
FORM NO. L-21252-B-1209
8
Alignment Tool Mounting Bolt Specifications
RPG
Size
Through Hole Tapped Hole
Bolt
Size
Tightening Torque
Initial/Final Nm [in-lb]
Thread
Depth
mm [in]
Tightening Torque
Initial/Final Nm [in-lb]
16 M6 1/5 [9/44] M8 16 [0.63] 1/8 [7/71]
20 M8 1/8 [7/71] M10 20 [0.79] 1/12 [9/106]
25 M10 2/28 [18/248] M12 24 [0.94] 2/30 [18/266]
32 M10 2/28 [18/248] M12 24 [0.94] 2/30 [18/266]
40 M10 3/32 [27/283] M12 24 [0.94] 3/35 [27/310]
4014 M10 3/32 [27/283] M12 24 [0.94] 3/35 [27/310]
Figure 4
Bolt Type
Mounting Material
Steel Cast Iron Aluminum
Gear Mounting Tightening Torque for Socket Head Cap Screws (Class 10.9 or better)
M6 16 Nm [140 in-lb] 10 Nm [89 in-lb] 8 Nm [71 in-lb]
M8 31 Nm [275 in-lb] 20 Nm [177 in-lb] 15 Nm [128 in-lb]
M10 68 Nm [602 in-lb] 45 Nm [398 in-lb] 33 Nm [292 in-lb]
M12 120 Nm [1062 in-lb] 78 Nm [690 in-lb] 58 Nm [513 in-lb]
M16 196 Nm [1735 in-lb] 131 Nm [1160 in-lb] 98 Nm [867 in-lb]
Gear Mounting Tightening Torque for Stainless Steel Screws (Class 8.8 or better)
M6 10 Nm [89 in-lb] 10 Nm [89 in-lb] 8 Nm [71 in-lb]
M8 19 Nm [168 in-lb] 19 Nm [168 in-lb] 15 Nm [128 in-lb]
M10 41 Nm [363 in-lb] 41 Nm [363 in-lb] 33 Nm [292 in-lb]
M12 70 Nm [620 in-lb] 70 Nm [620 in-lb] 58 Nm [513 in-lb]
M16 137 Nm [1213 in-lb] 131 Nm [1160 in-lb] 98 Nm [867 in-lb]
Table 2
Alignment Tool
Mounting Bolt
Alignment
Tool
Gear
Segment
Tapped Hole
Mounting of Alignment Tool
Through Hole
Mounting of Alignment Tool
Alignment Tool
Mounting Bolt
Alignment Tool
Gear
Segment
Gear
Mounting Bolt
E
B
D
Gear
Mounting Bolt
E
C Tapped Hole
A Through Hole
Table 1
Refer to Nexen product drawings and CAD files for your product numbers for precise dimensions. Bolt lengths will
vary based on machine design.
RPG
Size
Through Hole Mounting Tapped Hole Mounting Gear Mounting Hole E
A B C & D D Through Hole Bolt
16 9 M8 x 1.25 M6 x 1.00 M6-50 M6-50 M8
20 11 M10 x 1.50 M8 x 1.25 M6-60 M6-60 M10
25 14 M12 x 1.75 M10-20 x 1.50 M10-75 M10-75 M12
32 14 M12 x 1.75 M10-20 x 1.50 M10-95 M10-95 M12
40 14 M12 x 1.75 M10-20 x 1.50 M10-95 M10-95 M16
4014 14 M12 x 1.75 M10-20 x 1.50 M10-95 M10-95 M16