GE H301 Series, Operating Manual

Page: 37 / 137

H301/302 HSR Compressors | Rev. 2.2 | 27
Piston Ring and Packing Ring Clearances
H 301/302 piston ring side clearance
Piston ring width, Inches
0.114
0.116 0.187
0.189 0.213
0.215 0.215
0.217 0.248
0.25 0.248
0.253 0.25
0.252 0.257
0.26
Material
PEEK Teflon Teflon PEEK Teflon Non-lube Non-lube Teflon
Side clearance, inches
0.005
0.009 0.006
0.011 0.004
0.007 0.001
0.004 0.007
0.012 0.004
0.012 0.005
0.009 0
0.003
Piston side ring clearance (average) (per inch of cylinder diameter)
1-pc 1-pc 1-pc 1-pc 1-pc 1-pc 2-pc 2-pc
0.007 0.013 0.015 0.011 0.013 0.038 0.017 0.016
Table 5 Piston ring and packing ring clearances
Pressure packing ring side clearance
Cup depth Ring type Ring width
Packing ring
side clearance
0.375 (9.525)
0.377 (9.576)
Pressure breaker 0.369 (9.372)
0.007 (0.177)
0.375 (9.525)
0.377 (9.576)
BCD set 0.366 (9.296)
0.01 (0.254)
0.375 (9.525)
0.377 (9.576)
BD Packing 0.362 (9.194)
0.014 (0.355)
0.562 (14.274)
0.564 (14.325)
Oil wiper set 0.555 (14.097) 0.008 (0.203)
Table 6 Pressure packing ring clearances
Fastener Torque Values
Refer to the engineering torque specification GES089 , found on the HSR
compressor website for all torque values.
All torque values are for hardware lubricated with Molykote ®
P-37, SAE 30 or 40 weight crankcase oil.
Complies with ANSI Z535, ISO 3864, OSHA 1910.145 (f) (9)