Komatsu 82E Series User Manual

82E-5 – 98E-5 SERIES 8-5
8. TURBOCHARGER
8.2 Service Standards and Tightening Torque
8.2.1 Service standards
RHB31/RHB51 type
Unit: mm
Standard dimension Wear limit
RHB31 RHB51 RHB31 RHB51
Turbine
shaft
Turbine shaft journal outside diameter (A) 6.257 – 6.263 7.99 – 8.00 6.25 7.98
Turbine shaft seal ring groove width (E) 1.038 – 1.062 1.25 – 1.28 1.07 1.29
Compressor side seal ring groove width (G
1
)
1.02 – 1.03 1.22 – 1.23 1.04 1.31
Compressor side seal ring groove width (G
2
)
0.82 – 0.83 1.02 – 1.03 0.84 1.11
Turbine shaft run-out 0.002 0.002 0.005 0.011
Bearing
Journal bearing inside diameter (C) 6.275 – 6.285 8.01 – 8.03 6.29 8.04
Journal bearing outside diameter (D) 9.940 – 9.946 12.32 – 12.33 9.93 12.31
Bearing housing inside diameter (B) 9.995 – 10.005 12.40 – 12.41 10.01 12.42
Thrust
bearing
Thrust bearing width (J) 3.59 – 3.61 3.99 – 4.01 3.58 3.98
Thrust bushing groove dimension (K) 3.632 – 3.642 4.04 – 4.05 3.65 4.07
Seal
ring fix-
ing area
Turbine side (bearing housing)(F) 11.00 – 11.018 15.00 – 15.02 11.03 15.05
Compressor side (seal ring)(H
1
)
9.987 – 10.025 12.40 – 12.42 10.04 12.45
Compressor side (seal ring)(H
2
)
7.968 – 8.00 10.00 – 10.02 8.01 10.05
Rotor play in axial direction 0.022 – 0.053 0.03 – 0.06 0.07 0.09
Rotor play in radial direction 0.061 – 0.093 0.08 – 0.13 0.12 0.17

Komatsu 82E Series Specifications

General

Brand	Komatsu
Model	82E Series
Category	Engine
Language	English