2205Q2JE-HO-S6-N_2020.01.
Chapter 7 Related Documents
SCV-series Screw Compressor 7.3 Tightening Torques for Bolts and Nuts
7-25
7.3 Tightening Torques for Bolts and Nuts
7.3.1 Hexagon Head Bolts
Table 7-5 Hexagon Head Bolts Used and Each Tightening Torque
P/N Tightening Location
Nominal Designation x Length mm
(Qty)
45
Thrust Bearing Gland
M10x30 (8)
M12x35 (8)
M16x45 (8)
M20x55 (8)
94 Suction Flange
M20x55 (8)
M22x55 (8)
M24x65 (12)
M24x75 (16)
97
Discharge
Flange
CD
type
Sideways
discharge
M22x55 (4)
M20x55 (8)
M22x55 (8)
M20x55 (12)
A
type
Sideways
discharge
M22x80 (4)
M20x80 (8)
M22x85 (8)
M20x85 (12)
Downward
discharge
M22x55 (4)
160
M20x55 (8)
140
M22x55 (8)
160
―
217 Lubricating Oil inlet Flange ―
M12x35 (2)
40
M12x35 (4)
40
M12x40 (4)
40
218
Oil Injection inlet Flange
― ― ―
M12x40 (4)
253
Economizer inlet Flange
M12x35 (4)
M12x40 (4)
M16x45 (4)
M20x55 (4)
256
Liquid Injection inlet 1 Flange
M12x35 (2)
M12x35 (4)
M12x40 (4)
M16x45 (4)
603
Lubricating Oil inlet
(F Rotor side) Flange
― ― ―
M12x35 (2)
Note:
When MYK-A type flange is used as discharge flange for sideways discharge type
compressor, the length of the fastening bolt [97] is longer than other type models
due to using the discharge flange spacer [235].
Pay particular attention to the tightening the thrust bearing gland so that they are not
partially tightened.
Tighten with the procedure shown in 7.3.4.