bitzer S4N-8.2, 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 | |
|---|---|---|---|---|---|
| 2 | BRG2100 | 31110007 | Bearing bush / Slide bearing; dimensions: Ø55 × Ø50 × 30 (Radial); used in: Motor side. | ||
| 3 | BRG2100 | 31110014 | Bearing bush / Slide bearing; dimensions: Ø55 × Ø50 × 30 (Radial); used in: Crankcase side; from year: 11/1990. | ||
| 4 | WAS2100 | 32050005 | Thrust washer; dimensions: Ø62 × Ø50,5 × 1,7; used in: Motor side. | ||
| 5 | WAS2100 | 32050005 | Thrust washer; dimensions: Ø62 × Ø50,5 × 1,7; used in: Crankcase side. | ||
| 6 | CKS2100 | 30100702 | Crankshaft. | ||
| 7 | 36611201 | Plug; dimensions: M8×1 (DIN 906). | |||
| 23 | GKT2036 | 37231403 | Gasket; dimensions: Ø182 × Ø133 × 1. | ||
| 24 | HSG2100 | 30512501 | Bearing cover; used in: complete; from year: 02/1996. | ||
| 25 | BRG2110 | 31110017 | Bearing bush / Slide bearing; dimensions: Ø50 × Ø45 × 40,7 (Radial). | ||
| 26 | WAS2000 | 32050007 | Thrust washer; dimensions: Ø62 × Ø48 × 1,7. | ||
| 27 | BLTCMA10X030 | 38030632 | Cheese-head screw; dimensions: M10 × 30 (DIN 912 - M10 × 30 - 10.9); from year: 02/1996. | ||
| 27 | 38030625 | Cheese-head screw; dimensions: M10 × 50 (DIN 912 - M10 × 50 - 10.9); from year: 02/1996. | |||
| 27 | BLTCMA10X025 | 38015605 | Hexagon head screw; dimensions: M10 × 25 (DIN 933 - M10 × 25 - 10.9); from year: 01/1996. | ||
| 28 | PMP2100 | 36250301 | Oil pump; used in: complete. | ||
| 29 | RNG2019 | 37200119 | O-ring (CR). | ||
| 30 | 38015505 | Hexagon head screw; dimensions: M8 × 20 (DIN 933 - M8 × 20 - 10.9). | |||
| 31 | 38033901 | Cheese-head screw; dimensions: M10 × 30 (ISO 4762 - M10 × 30 - 10.9); from year: 12/2018. | |||
| 32 | 32031401 | Fixing plate; dimensions: 140 × 40 × 3. | |||
| 33 | LCKCMG04 | 38200201 | Washer; dimensions: A4,3 (brass DIN 125). | ||
| 34 | 00000001 | Article cancelled. | |||
| 35 | 38050751 | Oval head screw; dimensions: M4 × 8 (ISO 7045 - M4 × 8 - 4.8). | |||
| 36 | 34732033 | Differential oil pressure cut-out; dimensions: 100 × 50 × 130 (115/230 V - 1 - 50/60 Hz); used in: complete; from year: 07/2001. | |||
| 37 | 36150021 | Schrader valve; dimensions: 1/8" - 27 NPTF × 7/16" - 20 UNF. | |||
| 38 | WAS2102 | 31203002 | Thrust collar; dimensions: Ø65 × 7. | ||
| 39 | RNG2116 | 37200116 | O-ring (CR). | ||
| 40 | WAS2103 | 31200501 | Retaining ring; dimensions: Ø64 × 45 × 4,2. | ||
| 41 | SPG2002 | 32590002 | Spring washer; dimensions: Ø58,5 × Ø46 × 0,5. | ||
| 42 | WAS2104 | 31200602 | Thrust collar; dimensions: Ø58 × Ø42 × 8,6. | ||
| 43 | 00000011 | is not required for this type !. | |||
| 45 | 38400112 | Parallel key; dimensions: 12 × 8 × 45 (DIN 6885 - A). | |||
| 48 | 00000001 | Article cancelled. | |||
| 49 | 32050204 | Thrust washer; dimensions: Ø54 × Ø17 × 5 (steel). | |||
| 50 | SPGCMW16 | 38215004 | Thrust washer; dimensions: S16 (spring steel). | ||
| 51 | 38016612 | Hexagon head screw; dimensions: M16 × 50 (ISO 4017 - M16 × 50 - 10.9). | |||
| 52 | GKT2011 | 37231502 | Gasket; dimensions: Ø286 × Ø238 × 1. | ||
| 53 | 30520601 | Housing cover. | |||
| 54 | BLTMYA052 | 38005702 | Hexagon head screw; dimensions: M12 × 55 (DIN 931 - M12 × 55 - 10.9). | ||
| 70 | 36612402 | Sealing screw; dimensions: M22; from year: 11/2018. | |||
| 71 | 00000001 | Article cancelled; from year: 11/2018. | |||
| 72 | SPG2108 | 32500001 | Pressure spring. | ||
| 73 | SRO2100 | 36200302 | Oil filter; dimensions: Ø14 × 105. | ||
| 74 | VSG2150 | 36011008 | Oil return system; from year: 09/1998. | ||
| 75 | 36611002 | Plug; dimensions: 1/4" (steel). | |||
| 76 | RNG2012 | 37200315 | O-ring (CR). | ||
| 77 | GLS2000 | 36180202 | Sight glass; dimensions: Ø67 × 8,5. | ||
| 79 | BLTCMA6X020 | 38015406 | Hexagon head screw; dimensions: M6 × 20 (DIN 933 - M6 × 20 - 10.9). | ||
| 80 | 36611010 | Plug; dimensions: 1/2" - 14 NPTF (steel). | |||
| 81 | GKT2113 | 37241301 | Gasket; dimensions: 220 × 200 × 1. | ||
| 82 | 32030703 | Bottom plate; dimensions: 220 × 200 × 12 × Ø21. | |||
| 83 | BLTCMA10X025 | 38015605 | Hexagon head screw; dimensions: M10 × 25 (DIN 933 - M10 × 25 - 10.9). | ||
| 84 | 37000302 | Kit damper elements; dimensions: Lo=42 (spring); from year: 07/1988. | |||
| 84 | 37000201 | Kit damper elements (Shore hardness 50 // elastomer). | |||
| 85 | 32500205 | Pressure spring; dimensions: 42; from year: 07/1988. | |||
| 85 | 37502602 | Damper element (Shore hardness 55 // elastomer); from year: 07/1981. | |||
| 86 | 37000303 | Kit damper elements; dimensions: Lo=46 (spring). | |||
| 86 | 37000201 | Kit damper elements (Shore hardness 50 // elastomer). | |||
| 87 | 32500206 | Pressure spring; dimensions: 46; from year: 07/1988. | |||
| 87 | 37502603 | Damper element (Shore hardness 66 // elastomer); from year: 07/1981. | |||
| 88 | 32730902 | Foot; dimensions: 315 × 40 × 8 × Ø21. | |||
| 89 | BLTCMA10X025 | 38015605 | Hexagon head screw; dimensions: M10 × 25 (DIN 933 - M10 × 25 - 10.9). | ||
| 90 | VSG2006 | 36111001 | Gas equalising valve; dimensions: G1/2". | ||
| 91 | 00000001 | Article cancelled. | |||
| 104 | BLTCMA10X065 | 38005604 | Hexagon head screw; dimensions: M10 × 65 (DIN 931 - M10 × 65 - 10.9). | ||
| 105 | PLU75022 | 36611001 | Plug; dimensions: 1/8“ - 27 NPTF (steel). | ||
| 105 | PLU2E200 | 36610021 | Plug; dimensions: 1/8" - 27 NPTF. | ||
| 111 | TER2000 | 34341602 | Terminal plate; dimensions: 165 × 120 × 15,5; used in: complete; from year: 06/2012. | ||
| 112 | GKT2039 | 37242115 | Gasket; dimensions: 163 × 118 × 1; from year: 09/2021. | ||
| 113 | 00000007 | Article no longer available. | |||
| 114 | 34341708 | Electrical connecting parts; used in: complete. | |||
| 115 | GKT21401 | 37212401 | Gasket; dimensions: 165 × 120 × 3; used in: violet. | ||
| 116 | 34341403 | Terminal plate; used in: complete. | |||
| 117 | 37500202 | Isolating plate; dimensions: 70 × 20 × 6. | |||
| 118 | 37500102 | Pressure bush; dimensions: Ø6 × Ø21,5 × 8. | |||
| 119 | 37500002 | Gasket ring; dimensions: Ø12 × Ø6 × 8. | |||
| 120 | 38200203 | Washer; dimensions: A6,4 (brass DIN 125). | |||
| 121 | NUT42300 | 38130104 | Hexagon nut; dimensions: M6 (ISO 4032 - M6 - Ms). | ||
| 122 | 32031803 | Connection bridge; dimensions: 39 × 12 × 0,8 (brass). | |||
| 123 | 38200202 | Washer; dimensions: A5,3 (brass DIN 125). | |||
| 124 | 38130103 | Hexagon nut; dimensions: M5 (ISO 4032 - M5 - Ms). | |||
| 125 | SPGCMW8 | 38215201 | Thrust washer; dimensions: S8; from year: 01/2008. | ||
| 127 | 30291502 | Terminal; used in: separate out using filters; from year: 03/2005. | |||
| 128 | 34341404 | Terminals complete; used in: complete. | |||
| 129 | 00000007 | Article no longer available. | |||
| 130 | 37500201 | Isolating plate; dimensions: 53 × 18 × 6,5. | |||
| 131 | 37500101 | Pressure bush; dimensions: Ø4,5 × Ø18,5 × 8,5. | |||
| 132 | 37500001 | Gasket ring; dimensions: Ø4,5 × Ø18,5 × 8,5. | |||
| 133 | 00000001 | Article cancelled. | |||
| 134 | 00000001 | Article cancelled. | |||
| 135 | 00000001 | Article cancelled. | |||
| 136 | 37500601 | Isolating plate; dimensions: 86 × 70 × 3. | |||
| 137 | TER2003 | 34341301 | Kit connection bridge; used in: violet. | ||
| 138 | 38030622 | Cheese-head screw; dimensions: M10 × 20 (DIN 912 - M10 × 20 - 10.9). | |||
| 139 | PLC201 | 32120201 | Centring plate; dimensions: 167 × 122 × 12. | ||
| 140 | GKT2090 | 37212001 | Gasket; dimensions: 133 × 117 × 2. | ||
| 141 | BOX2002 | 34350767 | Terminal box; dimensions: 244 × 189 × 85 (aluminum). | ||
| 142 | LCKCMG04 | 38200201 | Washer; dimensions: A4,3 (brass DIN 125). | ||
| 143 | BLT23851 | 38050851 | Oval head screw; dimensions: M5 × 20 (DIN 7985 - M5 × 20 - 4.8); used in: Aluminium terminal box; from year: 12/1993. | ||
| 144 | 00000003 | Not available separately. | |||
| 145 | 34702804 | Compressor protection device (24 V - 50/60 Hz). | |||
| 145 | 34702805 | Compressor protection device (24 V - DC). | |||
| 145 | SEN1011 | 34700401 | Compressor protection device (230 V - 50/60 Hz). | ||
| 145 | 34700402 | Compressor protection device (115 V - 50/60 Hz). | |||
| 145 | SEN1010 | 34700403 | Compressor protection device (230 V - 50/60 Hz). | ||
| 145 | 34700405 | Compressor protection device (115 V - 50/60 Hz). | |||
| 145 | SEN2101 | 34703504 | Compressor protection device (110/230 V - 50/60Hz); from year: 06/2021. | ||
| 145 | SEN2101 | 34703504 | Compressor protection device (110/230 V - 50/60Hz); from year: 06/2021. | ||
| 146 | BLTCMA4X008T | 38050752 | Oval head screw; dimensions: M4 × 10 (DIN 7985 - M4 × 10 - 4.8); from year: 12/2010. | ||
| 147 | BLT23154 | 38050154 | Oval head screw; dimensions: M6 × 16 (DIN 7985 - M6 × 16 - 4.8); from year: 12/1993. | ||
| 150 | GKT21401 | 37212401 | Gasket; dimensions: 165 × 120 × 3. | ||
| 154 | 34626046 | Built-in motor; dimensions: Ø223 (40P 7,5 HP); from year: 06/2012. | |||
| 154 | 34626014 | Built-in motor; dimensions: Ø223 (40D 7,5 HP); from year: 06/2012. | |||
| 154 | 34626012 | Built-in motor; dimensions: Ø223 (40S 7,5 HP); from year: 06/2012. | |||
| 156 | KEY2E110 | 38410105 | Gib-headed key; dimensions: 5 × 5 × 36 (steel DIN 6887 - 5 × 5 × 36). | ||
| 157 | SPRCM10X12 | 38035801 | Set screw; dimensions: M10 × 12 (DIN 916 - M10 × 12 - 10.9); from year: 04/2001. | ||
| 190 | 34320834 | Oil heater (230 V - 1 - 50/60 Hz -100 W). | |||
| 190 | 34320832 | Oil heater (110 V - 1 - 50/60 Hz - 100 W). | |||
| 190 | 34320831 | Oil heater (24 V - 1 - 50/60 Hz - 100 W). | |||
| 190 | 34320830 | Oil heater (12 V - 1 - 50/60 Hz - 100 W). | |||
| 190 | 34320835 | Oil heater (380 V - 1 - 50/60 Hz -100 W). | |||
| 191 | 38901902 | Electric connector of the device; from year: 10/2024. | |||
| 192 | HTR2110 | 34590604 | Heater sleeve; dimensions: 3/8" - 18 NPTF × 204; from year: 08/2005. | ||
| 300 | 30004301 | Housing (cast iron). | |||
| 301 | PLT2160 | 30401702 | Valve plate; dimensions: Ø60; used in: complete. | ||
| 302 | GKT2160 | 37251012 | Gasket; dimensions: 127 × 196 × 0,9 - Ø60. | ||
| 303 | GKT2141 | 37261102 | Gasket; dimensions: 127 × 196 × 0,75. | ||
| 304 | 30236029 | Cylinder head; dimensions: 196 × 127 × 59; from year: 11/2007. | |||
| 305 | PLT2260 | 30401701 | Valve plate; dimensions: Ø55; used in: complete. | ||
| 306 | GKT2155 | 37251011 | Gasket; dimensions: 127 × 196 × 0,9 - Ø55. | ||
| 307 | GKT2142 | 37261103 | Gasket; dimensions: 127 × 196 × 0,75. | ||
| 308 | 30236028 | Cylinder head; dimensions: 196 × 127 × 59; from year: 11/2007. | |||
| 309 | PLU2E200 | 36610021 | Plug; dimensions: 1/8" - 27 NPTF. | ||
| 310 | 36131013 | Shut-off valve; dimensions: Ø22 (7/8"). | |||
| 310 | 36131570 | Shut-off valve. | |||
| 310 | 36701539 | Blind flange (LA48). | |||
| 311 | 36600003 | Pipe connection; dimensions: Ø22 - 1 1/4" - 12 UNF (steel coppered). | |||
| 312 | GKT2100T | 37220003 | Gasket ring; dimensions: Ø25,4 × Ø22,2 × 1,5 (1 1/4-12 - PTFE). | ||
| 313 | 36620117 | Protective cap; dimensions: 3/4" - 16 UNF / L=43 (plastic - GRP). | |||
| 314 | GKT1236 | 37270701 | Gasket; dimensions: 68 × 38 × 1. | ||
| 315 | BLTCMA10X090 | 38030628 | Cheese-head screw; dimensions: M10 × 90 (DIN 912 - M10 × 90 - 10.9). | ||
| 316 | 38030623 | Cheese-head screw; dimensions: M10 × 25 (DIN 912 - M10 × 25 - 10.9). | |||
| 317 | GKT2031 | 37270401 | Gasket; dimensions: Ø31 × 1,0 (LA66). | ||
| 318 | BLTCMA10X030 | 38015606 | Hexagon head screw; dimensions: M10 × 30 (DIN 933 - M10 × 30 - 10.9). | ||
| 319 | 36050750 | Piping. | |||
| 320 | 37700502 | Isolation. | |||
| 321 | 36140404 | Injection valve (R404A). | |||
| 321 | 36140403 | Injection valve (R404A). | |||
| 321 | 36140402 | Injection valve (R404A); from year: 12/1997. | |||
| 321 | 36140408 | Injection valve (R22); from year: 12/1997. | |||
| 322 | 35300207 | Subcooler; dimensions: 317 × 76 × 33. | |||
| 323 | 36182201 | Sight glass; dimensions: Ø10 × 109; from year: 08/1997. | |||
| 324 | 34710002 | Solenoid valve; dimensions: Ø10 (EVR 6 230 V - 50/60 Hz); used in: Liquid subcooling. | |||
| 325 | 36210105 | Filter drier; dimensions: DML 053s - Ø10. | |||
| 326 | 36040204 | Piping. | |||
| 327 | SEN2000 | 34702303 | Sensor (140 °C). | ||
| 328 | PRA2324 | 30229724 | Connecting rod / piston; dimensions: Ø60; used in: complete; from year: 01/2006. | ||
| 329 | 30211751 | Connecting rod; dimensions: Ø45 × Ø15 × 112. | |||
| 329 | ROD2100 | 30211750 | Connecting rod; dimensions: Ø45 × Ø20 × 112. | ||
| 330 | PST2160 | 30223216 | Piston; dimensions: Ø60; used in: complete. | ||
| 331 | SGM2160 | 38230052 | Piston ring; dimensions: Ø60 × 1,5 (ISO 6622). | ||
| 332 | SGM2161 | 38231019 | Piston ring; dimensions: Ø60 × 1,5 (ISO 6622). | ||
| 333 | 38340102 | Wrist pin; dimensions: Ø15 × Ø10 × 40 (DIN 73126). | |||
| 333 | PIN2100 | 38340104 | Wrist pin; dimensions: Ø20 × Ø13 × 45 (DIN 73126). | ||
| 334 | 30229765 | Connecting rod / piston; dimensions: Ø48; used in: complete; from year: 01/2006. | |||
| 337 | SGM2148 | 38230064 | Piston ring; dimensions: Ø48 × 2 (ISO 6622). | ||
| 338 | 00000011 | is not required for this type !. | |||
| 339 | PST2161 | 30223331 | Piston; dimensions: Ø48; used in: complete. | ||
| 340 | GRF2100 | 36131014 | Shut-off valve; dimensions: Ø28 (1 1/8"). | ||
| 340 | GRF2100 | 36131571 | Shut-off valve; dimensions: Ø28. | ||
| 340 | 36701539 | Blind flange (LA48). | |||
| 341 | 36600004 | Pipe connection; dimensions: Ø28 - 1 1/4" - 12 UNF (steel coppered). | |||
| 342 | GKT2100T | 37220003 | Gasket ring; dimensions: Ø25,4 × Ø22,2 × 1,5 (1 1/4-12 - PTFE). | ||
| 343 | 36620117 | Protective cap; dimensions: 3/4" - 16 UNF / L=43 (plastic - GRP). | |||
| 344 | SRN2102 | 36200111 | Suction gas filter; dimensions: Ø20 × 50. | ||
| 345 | GKT1236 | 37270701 | Gasket; dimensions: 68 × 38 × 1. | ||
| 350 | KIT2163 | 37281701 | Gasket set. | ||
| 406 | COL234330801 | 34330801 | Solenoid coil (230 V - 1 - 50/60 Hz). | ||
| 407 | 38900204 | Electric connector of the device. |
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