Mycom 12B / 12WB, Reciprocating compressor, Open, 12 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)
1		CR00100B12	Crankcase (mm scale 12B/12WB).
2		CR00200ALB12	Crankshaft 12B (AL 12B/12WB).
3		CR00300B12	Drag Crank 12B (12B, 12WB).
4	KEYMYB000	CR00400B	Pulley Key B (24x15.6x11 (rounded at one end)).
5	WASMYB005	CR00500B	Pulley Flat Washer (B, WB).
5		CR00500BL	Pulley Flat Washer 90 (B, WB).
6	WASMYA006	CR00600AB	Pulley Lock Washer (A, WA, B, WB M27).
7	BLTMYA007	CR00700AB	Pulley Set Bolt (M27x50 (P=1.5)).
8		CR00800B12	Main Bearing Head (12B, 12WB).
9	GKTMYB12009	CR02400B12N	Gasket, Main Bearing Head 12B (12B, 12WB).
10		NB35416040	Main Bearing Head Fastening Bolt (SCM3, M16x40).
12		CR01200B12	Main Bearing 12B (12B 12WB).
13	BLTMYB013	NA22506020	Main Bearing Screw (M6x20 (Countersunk screw)).
14		CR0149B12	CUNO Filter Assembly 12B (12B 12WB).
15	GKTMYB015	CR01500BN	Gasket, CUNO Filter Cover (B, WB).
16		NB14010030	CUNO Filter Cover Fastening Bolt (M10x30 P=1.5 (small head)).
20		KA2130010	Oil Supply and Discharge Valve (Needle valve AS 10A).
22	VSGMYA010	NL151N	Oil Pressure Control Valve Assembly (JO-5920).
22	VSGMYA010	NL152SFX	Oil Pressure Control Valve Assembly (SFX).
23		CR02300MB12	Bearing Head 12B (mm scale 12B 12WB).
23		CR02300MB12B	Type BB Bearing Head 12B (mm scale 12B, 12WB BB).
24	GKTMYB12009	CR02400B12N	Gasket, Bearing Head 12B (12B, 12WB).
25		NB35416035	Bearing Head Fastening Hexagon Socket Head Cap Screw (SCM3 M16x35).
25		NB35416040	Bearing Head Fastening Hexagon Socket Head Cap Screw (SCM3 M16x40).
26	COVMYB026	CR02600B	Cover Plate (B, WB).
27	GKTMYB027	CR02700BN	Gasket, Cover Plate (B, WB).
28	BLTMYB028	NB14016090	Cover Plate Fastening Bolt (S45C M16x90).
29		CR02900B12	Thrust Bearing 12B (12B, 12WB).
29-1		CR70800B	Thrust Ball Bearing (B, WB (NH3) 51126).
29-1		CR70900B	Thrust Roller Bearing (B, WB (Freon)).
30		ND320012	Washer for Thrust Bearing Fastening Bolt.
31		NB14012035	Thrust Bearing Fastening Bolt (M12x35).
32	SELMYB000	CR03209NB	Mechanical Seal Assembly B (HNBR) (B, WB (HNBR)).
32		CR03200WBLH	Mechanical Seal Assembly 12, 124B (HNBR) (12B, 12·4B (HNBR)).
33		CR0339FB	Double Seal Collar with O-ring (B, WB (Freon) with O-ring).
33	SELMYB033N	CR0339NB	Seal Collar with O-ring (B (NH3) with O-ring).
33		CR0339WB	Double Seal Collar with O-ring (WB with O-ring).
34		NA	Double Seal Collar Fixing Ring.
35		NA	Double Seal Collar Floating Seat.
36		NA	Double Seal Collar Lock Pin (φ5x14spring pin).
37	RNG70198	PC61053	O-ring for Double Seal Collar (AS568A 426 FKM).
38	SPGMYA038	CR03800AB	Double Seal Collar Spring (B, WB, A, WA).
39	RNG71047	PAH82344	O-ring for Shaft Seal Collar (AS568A 344 HNBR).
40	LCKMYB040	CR04000B	Lock Nut (M95(P=1)).
41	SELMYB041	CR04100B	Shaft Seal Ring (B, WB).
42	RNG70048	PAH82348	O-ring for Shaft Seal Ring (AS568A 348 HNBR).
43	SPGMYB043	CR04300B	Helical Spring (B, WB).
43	SPGMYB043X10	CR0439B	Helical Spring Set (B, WB).
44	DWLCM3X20	NE3203020	Spring Pin (φ3x20).
45		CR04909B12A	Hand Hole Cover (former type B head cover) (Tap, with Gasket).
47	GKTMYB051	CR05100BN	Gasket, Hand Hole Cover (WB head cover gasket).
48		NB15516060S	Hand Hole Cover Fastening Bolt (SCM3/11T M16x60).
48		NB111016060	Hand Hole Cover Fastening Bolt (10.9T M16x60).
49		CR0499BA	Head Cover (air cooled) B (B with Gasket).
49		CR0499WBA	Head Cover (air cooled) WB (WB with Gasket).
50	HEDMYB000	CR0499BW	Head Cover (water cooled) B (B with Gasket).
50	HEDMYB500	CR0499WBW	Head Cover (water cooled) WB (WA with Gasket).
51	GKTMYB051	CR05100BN	Gasket, Head Cover (B, WB).
52		NB111016045	Head Cover Fastening Bolt (10. 9T M16x45).
52		NB14016060	Head Cover Fastening Bolt (M16x60).
52		CR05300B1	Head Cover Marking Plate (B, WB MYCOM).
52	GKTMYB055	CR05500B	Gasket, Head Cover Marking Plate.
54		NB17010025	Head Jacket Cover Fastening Bolt (M10x25).
55	GKTMYB555	CR05500WBW	Gasket, Head Jacket Cover (water cooled), Zinc ZAP WB.
55	GKTMYB555	CR05500WBR	Gasket, Head Jacket Cover (refrigerant).
56	PMPMYB120	CR0569B3	Oil Pump 12, 16B with Gasket (12B, 12WB).
59	GKTMYB12059	CR05900B12N	Gasket, Oil Pump 12B (12B, 12WB).
60		NB14016040	Oil Pump Fastening Bolt (S45C M16x40).
60		NB111016040	Oil Pump Fastening Bolt (10.9T M16x40).
61	LNRMYB000	CR0619B2	Cylinder Sleeve B (B, WB with Gasket).
61		CR0619ZBL	Cylinder Sleeve Assembly Left (B, WB with Gasket).
61		CR0619ZBR	Cylinder Sleeve Assembly with Gasket, Right (B, WB).
62	UNLMYB000	CR06200BL	Cam Ring (left down) (B, WB).
63	UNLMYB001	CR06200BR	Cam Ring (right down) (B, WB).
65	RTRMYB065	CR06500B	Retaining Ring (B, WB).
66	GKTMYB066	CR06600B	Gasket, Cylinder Sleeve (B, WB).
68	PINMYB020	CR06800B	Lift Pin (B, WB).
69	SPGMYB020	CR06900B	Lift Pin Spring (B, WB).
70	SNPMYA020	CR07000AB	Split Cotter Pin for Lift Pin (A, WA, B, WB).
71	VALMYB000	CR07100B	Suction Valve (B, WB).
71		CR0719NB	Suction Valve Assembly (B, WB (NH3)).
71		CR0719FB	Suction Valve Assembly (B, WB (Freon)).
72	SPGMYM018	CR11600AB4	Suction Valve Spring (A/B type 4 single stage/high-stage).
72	SPGMYM018	CR11600AB4	Suction Valve Spring (A/B type 4 (R134a, R404A, R507A)).
72	SPGMYB509	CR0729WB4	Suction Valve Spring Set (WB CR11600-AB4x8 springs).
73	PLTMYB503	CR07300NWB	Valve Plate (WB/NH3 single stage/high-stage).
73	PLTMYB500	CR07300FWB	Valve Plate (WB/R single stage/high-stage).
74	GUDMYB000	CR07400B	Discharge Cage Guide WB (WB).
75		NB14012060	Discharge Cage Guide Fastening Bolt (M12x60 (P=1.25)).
75		NB111012060	Discharge Cage Guide Fastening Bolt (10.9T M12x60).
77	RODMYB000	CR07600BM	Connecting Rod (for low-stage) (B, WB bushing).
78	BLTMYB000	CR07800B	Crank Pin Fastening Bolt (B, WB).
78	BLTMYB000	CR0789B	Rod Fastening Bolt Set.
79	WASMYB000	CR07900B	Washer for Crank Pin Fastening Bolt (B, WB).
80	NUTMYB000	CR08000B1	First Nut, Crank Pin Fastening (B, WB).
81		CR08000B2	Second Nut, Crank Pin Fastening (B, WB).
82	BRGMYB030	CR08200BF	Connecting Rod Bushing (B, WB BP8-2F low-stage).
84	BRGMYB020	CR0849B	Bearing Halves (top/bottom set) (B, WB).
84	BRGMYB020X020	CR0849B05	Bearing Halves (top/bottom set) (B, WB 0.5 mm).
84	BRGMYB020X040	CR0849B10	Bearing Halves (top/bottom set) (B, WB 1.0 mm).
85	PSTMYB000	CR08500ALBMH	Piston (B, WB AL).
86	PINMYB000	CR08600B	Piston Pin (B, WB).
87		CR08700B	Lock Spring, Piston Pin Locking (B, WB).
87	SNPCMIX040	CR0879B	Piston Pin Lock Spring Set (B, WB).
88	SGMMYB023	CR0899FB	Piston Ring Set (B, WB (Freon), SF).
88	SGMMYB023	CR0899NB	Piston Ring Set (B, WB (NH3)).
88	SGMMYB023	CR0899WB1	Piston Ring Set (WB).
89	SGMMYB023	CR08900BFCBFG1	Piston Ring (B, FC-PC-BFG1) (1st).
90		CR08900BFCP	Piston Ring (B, FC-P) (2nd).
100	SGMMYB023	CR08900BFCBC3P	Piston Ring (B, FC-PC-BC3P) (3rd).
101	SGMMYB023	CR08900BFCBC3	Piston Ring (B, FC-PC-BC3) (4th).
108	PLTMYB513	CR10800WBCN	Discharge Valve Assembly (WB, CN) (NH3 single stage/high-stage).
108	PLTMYB510	CR10800WBCR	Discharge Valve Assembly (WB, CR) (R22, R23 single stage/high-stage).
108	PLTMYB510	CR10800WBCR	Discharge Valve Assembly (WB, CR) (Propane).
108		CR10800WBCRH	Discharge Valve Assembly (WB, WCRH) (R134a, R404A, R507A single stage/high-stage).
109	CAGMYB513	CR10900WBCN	Discharge Valve Cage (WB, CN) (NH3 single stage/high-stage).
109	CAGMYB010H	CR10900WBCR	Discharge Valve Cage (WB, CR) (R22, R23 single stage/high-stage).
109	CAGMYB010H	CR10900WBCR	Discharge Valve Cage (WB, CR) (Propane).
109	CAGMYB510	CR10900WBCRH	Discharge Valve Cage (WB, WCRH) (R134a, R404A, R507A single stage/high-stage).
110		CR11000SFW	Discharge Valve (SFW) (R134a, R404A, R507A single stage/high-stage).
110	VALMYB010	CR11000B14	Discharge Valve (NH3, R22, R23, Propane).
111	SETMYB010	CR11100B	Discharge Valve Seat (B, WB).
112		CR11200B	Discharge Valve Fastening Bolt (B, WB).
112	BLTMYB010	CR1129B	Discharge Valve Fastening Bolt Set (B, WB).
113		CR11300B1	First Nut, Discharge Valve Fastening.
114		CR11300B2	Second Nut, Discharge Valve Fastening.
116	SPGMYM018	CR11600AB4	Discharge Valve Spring (AB Type 4 NH3, Freon single stage, high-stage).
116	SPGMYM018	CR11600AB4	Discharge Valve Spring (AB Type 4 Propane).
116	SPGMYB519	CR1169WB4	Discharge Valve Spring Set (WB Type 4 12springs/set).
117	SPGMYB050	CR11700B	Head Spring (B, WB).
118		CR11800B12	Oil Strainer Holder 12B (12B).
119		CR11900B12	Oil Strainer Wire Mesh 12B (12B).
121		CR12100B01	Oil Strainer Cover with Hole (B, WB for marine).
121		CR12100B	Oil Strainer Cover without Hole (B, WB).
122	GKTMYB122	CR12200BN	Gasket, Oil Strainer Cover (B, WB).
123		NBH114010030	Oil Strainer Cover Fastening Bolt (M10x30 (small head)).
118	SROMYB016	CR1239B12	Oil Strainer Assembly with Gasket 12B (12B).
125		CR12609B12	Intermediate Shaft Bearing Assembly 12B.
126		NB114016050	Intermediate Shaft Bearing Fastening Bolt (8.8T M16x50).
126		ND11016	Washer, Tapered Pin (SS400 M16).
128		CR12800B12A	Intermediate Shaft Bearing Half (A).
129		CR12800B12B	Intermediate Shaft Bearing Half (B).
131		CR1340012B	Tapered Pin 12B (8x100).
133		NB114016050	Tapered Pin Fastening Nut (S45C M16).
134		CR13100B12	Tapered Pin for Intermediate Shaft Bearing, with Screw.
135	UNLMYB8B1	CR13509B081	Push Rod, Unloader Slide Valve (8B/8WB -1).
135		CR13509B163	Push Rod, Unloader Slide Valve (16B-3).
135		CR13509B164	Push Rod, Unloader Slide Valve (16B-4).
142	SPGMYB142	CR14200B	Unloader Device Spring (B, WB).
143	WASMYB143	CR14300B	Push Rod Washer (B, WB/ 38103).
144		NB12010020	Push Rod Fastening Bolt (M10x20 (small head)).
145	UNLMYB145	CR14500FCB	Unloader Piston (B, WB).
146		CR14600B	Unloader Piston Cover B (B, WB).
146		CR14600B12	Unloader Piston Cover 12, 12·4B (12B, 12WB, 12·4B, 12·4WB).
147	GKTMYB12147	CR14700B12N	Gasket, Unloader Piston Cover (12B, 12WB, 12·4B, 12·4WB).
149		NB14010035	Unloader Piston Cover Fastening Bolt (M10x35).
150	PLUMYA150	NB35414015	Hexagon Socket Head Cap Screw, Unloader Piston Cover (SCM3 W1/4L15).
150-1		ND113065	Washer, Hexagon Socket Head Cap Screw (6.5x13x1).
154	SRNMYB001	CR15400B12	Suction Strainer 12B (12B, 12WB).
156		CR15600B12	Suction Strainer Canvas 12B (12B/12WB/12·4B).
159		CR15900B12	Suction Strainer Lock Spring 12B (12B/12WB/12·4B/12·4WB).
161		CR16100B12	Suction End Cover 12B (12B/12WB/12·4B/12·4WB).
162	GKTMYB12162	CR16200B12N	Gasket, Suction End Cover 12B (12B/12WB/12·4B/12·4WB).
163		NB14012040	Suction End Cover Fastening Bolt (S45C M12x40).
164	GLSMYA000	CR16400AB	Oil Sight Glass (70D A, WA, B, WB).
165	RNGMYA165	PA61035	O-ring for Oil Sight Glass (AS568A 332 NBR).
165	RNGMYA165	PC61035	O-ring for Oil Sight Glass (AS568A 332 FKM).
166	GLSMYA010	CR16600AB	Oil Sight Gland (70D 3/8).
167		NB14010030	Oil Sight Gland Fastening Bolt (M10x30 (small head)).
168		CR16800B06	Discharge Elbow (6BE1 (NH3, Freon) B).
170		NB14020060	Discharge Elbow Fastening Bolt (S45C M20x60).
170		NB114020060	Discharge Elbow Fastening Bolt (8.8T M20x60).
170		ND42220	Tooth Washer, Discharge Elbow Fastening (for M20).
171		KA2130010	Needle Valve (AS 10A).
172		CR72000050N	Gasket, Discharge (MYCOM flange G 50A).
172		CR72000065N	Gasket, Discharge (MYCOM flange G 65A).
172		CR72000080N	Gasket, Discharge (MYCOM flange G 80A).
172		CR72000090N	Gasket, Discharge (MYCOM flange G 90A).
173		CR72300W050	Discharge Stop Valve (MYK GVF ASSY W 50A).
173		CR72300W080	Discharge Stop Valve (MYK GVF ASSY W 80A).
173-1		CR74000080	Companion Flange, Discharge Stop Valve (MYCOM 80A (male)).
173B		NB12020090	Companion Flange Fastening Bolt, Discharge Stop Valve (SS400 M20x90).
174		NC12022	Discharge Stop Valve Fastening Nut (SS400 M22).
175		CR17500A081	Scale Trap (8AT1 low-stage suction).
181		NA	Scale Trap Cover Fastening Bolt (M12x40).
182		CR72300W090	Suction Stop Valve 90A (MYK GVF ASSY W 90A).
182		CR72300W125	Suction Stop Valve 125A (MYK GVF ASSY W125A).
182-1		CR74000090	Companion Flange, Suction Stop Valve (MYCOM 90A (male)).
182-1		CR74000125	Companion Flange, Suction Stop Valve (MYCOM 125A (male)).
182B		NB12020090	Companion Flange Fastening Bolt, Suction Stop Valve (SS400 M20x90).
182B		NB10420100	Companion Flange Fastening Bolt, Suction Stop Valve (SNB7 M20x100).
182B		NC12020	Companion Flange Fastening Bolt, Suction Stop Valve (SS400 M20).
183		NB12020100	Suction Stop Valve Mounting Bolt (SS400 M20x100).
183		NC12020	Nut for Suction Stop Valve Mounting Bolt (SS400 M20).
184	GKTMYB184125	CR72000125N	Gasket, Centering Location, Suction Stop Valve Mount (MYCOM flange gasket 125A).
184-1		CR75500090	Spacer (90A).
185		CR18500B12	Oil Cooler Assembly (water cooled, forward) 12B (12B, 16B, 12·4B (forward)).
192		CR18600B12	Oil Cooler Assembly (refrigerant type, forward) 12B (12B/12WB (forward)).
195	GKTMYB195W	CR19500BW12	Gasket, End Cover A 12B Water Cooled (12B, 12·4B water cooled).
196	GKTMYB196W	CR19600BW12	Gasket, End Cover B 12B Water Cooled (12B, 12·4B water cooled).
195	GKTMYA190	CR18800ABN	Gasket, Oil Cooler Mouth Piece (A, WA, B, WB).
190	GKTMYB188	CR19000B	Gasket, Oil Cooler Flange (B, WB).
198	TRMMYA010I	LC1102314	Thermometer and Case (I/45 0 + 200).
199	TRMMYA000I	LC1103311	Thermometer and Case (L/45 -50 + 50).
205		KF2211	Solenoid Valve (SX-7 100V).
205	SOLMYA000	KF2212	Solenoid Valve (SX-7 200V).
205	SOLMYA000	KF2213	Solenoid Valve (SX-7 220V).
205		KF2214	Solenoid Valve (SX-7 240V).
205		KF711XOF1	Solenoid Valve (SPOLAN XOF-120V).
208		NB60030	Eye Bolt (M30).
213	VSGMYA000	CR21300006P300	External Safety Valve (5602 3/4 300P).
213		KC02R013032	Safety Valve (RTK SVF32A 1.31 MPa).
245		LF1202110	Oil Heater (Cartridge heater MKCP-1102).
245	HTRMYA000	LF1202220	Oil Heater (Cartridge heater MKCP-2202).
245		LF2202110	Thermo Heater (Cartridge heater MKCP-T1102).
245	HTRMYA001	LF2202220	Thermo Heater (Cartridge heater MKCP-T2202).
NI	RNGMYB008	CR7109FBA	O-ring Set, F12B.
NI	RNGMYB008	CR7109NBA	O-ring Set, N12B.
NI	RNGMYB008	CR7109WB1	O-ring Set for WB Single Stage Machine.
NI	KITMYB512	CR7117NBA	Gasket Set N12WB/F12WB.
NI		CR7118NBA	Gasket Set N12B/F12B.
NI		CR7129NA	Set of Consumables for Mechanical Seal (B/R).
NI		CR7129NB	Set of Consumables for Mechanical Seal (B/NH3).
NI		CR70100AB	Rod Bushing Attachment/Removal Tool A/B (A, WA, B, WB).
NI		CR70200AB	Discharge Valve Disassembly Tool A/B (A, WA, B, WB).
NI		CR70400BM02	Disassembly Tool Set BM02 (B, WB).
NI		CR70400BM02ME	Disassembly Tool Set BM02/ME (B, WB (for ME)).
NI	BRGMYB020X010	NA	(84) KIT 2 SEMICOJINETES BIELA B - 0.25 / SET 2 HALF CONN. ROD BEARING UNDERSIZE 010 30.1X3.42.
NI	BRGMYB030	CR0821BF	(82)- COJINETE BIMETALICO PIE BIELA FIT B+WB / BUSHING CONN. ROD PLAIN 45X40.1X43.8 (82).
NI	BRGMYB056	CR0056B	(56)- COJINETE INTERNO BOMBA ACEITE B+WB GRANDE / INTERNAL OIL PUMP BEARING LARGEST 38X17 MM.
NI	CAGMYB013H	CR1090BCN	(109-H) GUARDA VAVLULA DESCARGA N-B NH3 HP / CAGE DISCHARGE VALVE HP STAGE 9 HOLES R-717.
NI	COLMYA000	KF2220022	(206) BOBINA VALVULA SOLENOIDE JEFFERSON A+B / COIL SOLENOID VALVE 220 V..
NI	COVMYB053	CR0539B1	(53) TAPA CULATA AGUA FIT B SOLO / MARK PLATE HEAD COVER.
NI	PINMYB020	CR0689B	(68+69+70) KIT 6 BULON ELEVACION + MUELLE + FIJACION FIT B+WB+WBH / LIFT PIN SET.
NI	PSTMYB020	NA	(85) PISTON ALUMINIO SOLO NUEVO FIT WBHE 3 SEGMENTOS / PISTON BARE 3 GROVES 130 MM.
NI	VSGMYA003	KC1150015	VALVULA SEGURIDAD EXTERNA NH3 / EXTERNAL SAFETY VALVE R-717 1/2"X3/4" 19 BAR (213).
NI	VSGMYA005	KC1110015	VALVULA SEGURIDAD EXTERNA NH3 / EXTERNAL SAFETY VALVE R-717 1/2"X3/4" 9 BAR (213L).
NI	WASMYB223	NA	ARRUELA MANCAL ENCOSTO B+WB (223).

Mycom 12B / 12WB, Reciprocating compressor, Open, 12 Cylinders

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