bitzer 4NHC-20K, Reciprocating compressor, Semihermetic, 4 Cylinders
Use this catalogue to identify the spare parts you need to repair your compressor. The OEM catalogue is crossreferenced with our spare parts database, matched items are highlighted. Some of our existing spare parts may not be shown because our database is incomplete (e.g. missing OEM P/N), or because we sell the items separatelly (typical example is the piston-connecting rod assembly). If you have any doubt please ask us.
All OEM manufacturer's names, part numbers, diagrams, products description and information are provided for reference and identification purposes only, and it is not implied that any part listed is the product of the OEM manufacturer.
| Item num. | Ralco P/N | OEM P/N | Description (from OEM manufacturer) | Add | |
|---|---|---|---|---|---|
| 1 | 37284120 | Gasket set. | |||
| 2 | BRG23100 | 31113503 | Bearing bush / Slide bearing; dimensions: Ø50 × Ø45 × 40 (Radial); from year: 2. | ||
| 3 | BRG23100 | 31113503 | Bearing bush / Slide bearing; dimensions: Ø50 × Ø45 × 40 (Radial); from year: 2. | ||
| 4 | WAS23100 | 32050010 | Thrust washer/ Slide bearing; dimensions: Ø66 × Ø48 × 1,6. | ||
| 5 | WAS23100 | 32050010 | Thrust washer/ Slide bearing; dimensions: Ø66 × Ø48 × 1,6. | ||
| 6 | 30112703 | Eccentric shaft. | |||
| 7 | KEY23140 | 38400123 | Parallel key; dimensions: 12 × 8 × 56 (steel DIN 6885 - A). | ||
| 9 | 30229831 | Connecting rod / piston; dimensions: Ø70. | |||
| 22 | 34775012 | Retrofit kit oil control. | |||
| 24 | GKT23903 | 37294903 | Gasket; dimensions: 274 × 274 × 1; from year: 2. | ||
| 26 | GKT23003C | 38240131 | Gasket ring; dimensions: A10 × 16 × 2 (copper). | ||
| 27 | 38022802 | Hexagon head screw; dimensions: M10 × 30 (ISO 4017 - M10 × 30 - 10.9); from year: 2. | |||
| 29 | GKT23006A | 38240301 | Gasket ring; dimensions: A20 × 24 × 1,5 (aluminum DIN 7603). | ||
| 30 | PLUCMA20A | 38091003 | Sealing screw; dimensions: M20×1,5 (DIN 908 - M20×1,5). | ||
| 32 | BRG23100 | 31113503 | Bearing bush / Slide bearing; dimensions: Ø50 × Ø45 × 40 (Radial); from year: 2. | ||
| 36 | 30297701 | Counter balance weight. | |||
| 39 | WAS23111 | 31100402 | Spacer sleeve; dimensions: Ø60 × Ø42,1 × 30,6. | ||
| 40 | MTR2020 | 34629446 | Built-in motor; dimensions: Ø223 (40P 20 HP). | ||
| 42 | SPRCM10X12 | 38035801 | Set screw; dimensions: M10 × 12 (DIN 916 - M10 × 12 - 10.9). | ||
| 43 | KEY2E110 | 38410105 | Gib-headed key; dimensions: 5 × 5 × 36 (steel DIN 6887 - 5 × 5 × 36). | ||
| 44 | 32110507 | Oil splasher plate; dimensions: Ø212 × 48,5. | |||
| 45 | 38034401 | Cheese-head screw; dimensions: M8 × 30 (ISO 4762 - M8 × 30 - 10.9); from year: 2. | |||
| 46 | 31800002 | Cheese-head screw; dimensions: M8 × 16 (ISO 4762 - M8 × 16 - 10.9); from year: 2. | |||
| 47 | SPGCMW8 | 38215201 | Thrust washer; dimensions: S8; from year: 2. | ||
| 54 | 30297601 | Counter balance weight. | |||
| 55 | GKT41801A | 38200105 | Washer; dimensions: A17 (spring steel DIN 125). | ||
| 56 | 38016610 | Hexagon head screw; dimensions: M16 × 70 (DIN 933 - M16 × 70 - 10.9). | |||
| 90 | GKT2039 | 37242203 | Gasket; dimensions: 165 × 120 × 0,488; from year: 2. | ||
| 91 | 34550622 | Terminal plate; dimensions: 165 × 120 × 15,5 (6-wire); from year: 3. | |||
| 94 | TER23014 | 38091201 | Threaded bolt; dimensions: M10 × 80 (6-wire DIN 976 - M10 × 80). | ||
| 95 | BLTCMA10X025 | 38030683 | Cheese-head screw; dimensions: M10 × 25 (DIN 912 - M10 × 25 - 10.9). | ||
| 96 | TER23100 | 34550701 | Terminal plate; dimensions: 165 × 120 × 10 (6-wire). | ||
| 100 | 36610121 | Plug; dimensions: 1/4" - 18 NPTF (brass); from year: 2. | |||
| 101 | PLU2E200 | 36610021 | Plug; dimensions: 1/8" - 27 NPTF. | ||
| 102 | 36150121 | Schrader valve; dimensions: 1/8" - 27 NPTF. | |||
| 103 | 00000011 | is not required for this type !. | |||
| 110 | TLT2901 | 38090213 | Eye bolt; dimensions: M10 (DIN 580 - M10); from year: 2. | ||
| 120 | GRF2319 | 36131519 | Shut-off valve; dimensions: Ø35 (1 3/8"). | ||
| 121 | 36620602 | Protective cap; dimensions: M24×2 (aluminum); from year: 2. | |||
| 130 | GKT2002 | 37270405 | Gasket; dimensions: ØI 34,5 × 1,0 (LA66). | ||
| 131 | GKT2031 | 37270401 | Gasket; dimensions: Ø31 × 1,0 (LA66). | ||
| 132 | BLTCMA10X030 | 38034006 | Cheese-head screw; dimensions: M10 × 30 (ISO 14579 - M10 × 30 - 8.8); from year: 3. | ||
| 150 | 36131576 | Shut-off valve; dimensions: Ø28; from year: 3. | |||
| 151 | 36620602 | Protective cap; dimensions: M24×2 (aluminum); from year: 2. | |||
| 157 | 00000001 | Article cancelled; from year: 2. | |||
| 158 | GKT2002 | 37270405 | Gasket; dimensions: ØI 34,5 × 1,0 (LA66); from year: 2. | ||
| 159 | BLTCMA10X030 | 38034006 | Cheese-head screw; dimensions: M10 × 30 (ISO 14579 - M10 × 30 - 8.8); from year: 4. | ||
| 160 | PLT23110 | 30406308 | Valve plate; dimensions: Ø70. | ||
| 161 | GKT23110 | 37251508 | Gasket; dimensions: 191 × 115 × 1,1. | ||
| 162 | GKT23150 | 37262301 | Gasket; dimensions: 191 × 115 × 0,49 (metallic support). | ||
| 163 | 38005621 | Hexagon head screw; dimensions: M10 × 50 (DIN 931 - M10 × 50 - 10.9). | |||
| 164 | 30236020 | Cylinder head; dimensions: 191 × 115 × 42. | |||
| 165 | BLTCMA10X065 | 38005604 | Hexagon head screw; dimensions: M10 × 65 (DIN 931 - M10 × 65 - 10.9). | ||
| 166 | 38001911 | Hexagon head screw; dimensions: M10 × 70 (ISO 4014 - M10 × 70 - 10.9); from year: 2. | |||
| 167 | PLU2E200 | 36610021 | Plug; dimensions: 1/8" - 27 NPTF. | ||
| 173 | 36110025 | Pressure relief valve; dimensions: 1/4" - 18 NPTF (25 bar). | |||
| 174 | 36620110 | Protective cap; dimensions: Ø46 × 15. | |||
| 178 | RNG2002 | 37203002 | O-ring. | ||
| 179 | 00000011 | is not required for this type !. | |||
| 190 | HTR23100 | 34321904 | Oil heater (200..260 V -140 W). | ||
| 190 | 34321903 | Oil heater (100..140 V - 140 W). | |||
| 200 | 37000211 | Damper element; dimensions: 35 × 55; from year: 2. | |||
| 201 | 37000210 | Kit damper elements (Shore hardness 65 // elastomer); from year: 2. | |||
| 237 | RNG1035 | 37200339 | O-ring. | ||
| 238 | GLS23000 | 36180203 | Sight glass; dimensions: Ø60 × 7. | ||
| 239 | 38010405 | Hexagon head screw; dimensions: M6 × 18 (DIN 933 - M6 × 18 - 8.8). | |||
| 240 | GKT23100 | 37294902 | Gasket; dimensions: 275 × 275 × 0,38. | ||
| 241 | SRN2103 | 36200110 | Suction gas filter; dimensions: Ø35 × 60. | ||
| 242 | 30523808 | Housing cover. | |||
| 243 | 38001911 | Hexagon head screw; dimensions: M10 × 70 (ISO 4014 - M10 × 70 - 10.9); from year: 2. | |||
| 244 | 00000011 | is not required for this type !. | |||
| 245 | 00000011 | is not required for this type !. | |||
| 470 | SEN2101 | 34703504 | Compressor protection device (110/230 V - 50/60Hz); from year: 2. | ||
| 470 | SEN2101 | 34703504 | Compressor protection device (110/230 V - 50/60Hz); from year: 2. | ||
| 470 | 34702804 | Compressor protection device (24 V - 50/60 Hz); from year: 2. | |||
| 470 | 34702805 | Compressor protection device (24 V - DC); from year: 2. | |||
| 472 | 38040206 | Cheese-head screw; dimensions: M4 × 16 (DIN 84 - M4 × 16). | |||
| 473 | BLT23154 | 38050154 | Oval head screw; dimensions: M6 × 16 (DIN 7985 - M6 × 16 - 4.8). | ||
| 474 | NUTVT001 | 38130106 | Hexagon nut; dimensions: M10 (ISO 4032 - M10 - Ms). | ||
| 475 | 38110902 | Hexagon nut; dimensions: M5 (EN 1663 - M5 - 8). | |||
| 476 | 31101214 | Spacer sleeve; dimensions: Ø17,5 × Ø10,5 × 15; from year: 2. | |||
| 477 | 34595001 | Recommendation sign; dimensions: M6. | |||
| 478 | TER23021 | 38220155 | Single-coil spring washer; dimensions: A6,4 (DIN 127). | ||
| 479 | WASCMM10 | 38200204 | Washer; dimensions: 10,5 (brass DIN 125). | ||
| 480 | BLT23851 | 38050851 | Oval head screw; dimensions: M5 × 20 (DIN 7985 - M5 × 20 - 4.8); used in: Aluminium terminal box. | ||
| 480 | 38093604 | Screw; dimensions: BM4 × 24; used in: Plastic junction box. | |||
| 484 | 34540501 | Terminal box; dimensions: 244 × 189 × 70 (aluminum). | |||
| 484 | 34352101 | Terminal box; dimensions: 244 x 189 x 85 (plastic IP66); from year: 3. |
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