This standard specifies the type, basic parameters and basic dimensions of the oil filter of the hydraulic system of the coal mining machine. This standard is applicable to the oil filter of the hydraulic system of the coal mining machine, and also to the oil filter of the hydraulic system of other coal mining equipment. MT/T 311-1992 Type and basic parameters of the oil filter of the hydraulic system of the coal mining machine MT/T311-1992 Standard download decompression password: www.bzxz.net

Coal Industry Standard of the People's Republic of China
Coal Miner Traction Hydraulic System
Oil Filter Type and Basic Parameters
Subject Content and Scope of Application
MT/T 311—92
This standard specifies the type, basic parameters and basic dimensions of the oil filter for the traction hydraulic system of the coal miner. This standard applies to the oil filter for the traction hydraulic system of the coal miner, and also to the oil filter for the hydraulic system of other coal mine special equipment. 2 Type of oil filter for the traction hydraulic system of the coal miner The type of oil filter for the traction hydraulic system of the coal miner is shown in Table 1. Table 1
Coarse oil filter
Fine oil filter
Structure example
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Basic parameters of oil filter for traction hydraulic system of the coal miner The basic parameters of oil filter for traction hydraulic system of the coal miner are shown in Table 2. Approved by the Ministry of Energy of the People's Republic of China on July 10, 1992 Features
When replacing the filter element, the oil inlet can be cut off by rotating the bushing
When replacing the filter element, the oil path cannot be cut off
Implemented on December 1, 1992
Oil filter
Filtration accuracy
MT/T311-92
Rated flow
Original pressure loss
Note: This table is applicable to mineral oils with a kinematic viscosity of less than 100 mm/s at 40°C. Dimensions of filter element for oil filter for traction hydraulic system of coal mining machine 4
Dimensions of filter element for oil filter for traction hydraulic system of coal mining machine are shown in Figure 1 and Table 3. Coarse filter element
Rated pressure
Fine filter element
Maximum allowable pressure loss
MT/T 311—92
$89±0.175
$104±0.175
$119±0.175
$98±0.175
$1 18±0.175
$133+:0.200
182+0.230
229±0.230
281±0.260
172±0.200
272±0.260
282±0.260
390+0.285
MT/T311-92
Appendix A
Relationship between basic filter element dimensions and rated flow (reference)
This appendix gives the relationship between basic filter element dimensions and rated flow for oil filter used in coal mining machine traction hydraulic system (see Table A1). Table A1
Additional notes:
Rated flow, L/min
This standard was proposed by China Coal Research Institute. D.mm
$89±0.175
104±0.175
$119±0.175
$98±0.175
$118±0.175
$133+0.200
This standard is under the jurisdiction of the Hydraulic Components Branch of the Technical Committee for Standardization of Coal Mine Special Equipment of the Ministry of Energy. This standard was drafted by the Shanghai Branch of the China Coal Research Institute and Shanghai Gaoxing Hydraulic Parts Factory. The main drafters of this standard are He Guoping, Zhao Hufen and Lu Detai. 480
182+0.230
229±0.230
281:0.260
172±0.200
272±0.260
282±0.260
390±0.285
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