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Product Description
GOST 66-42205AEM · Cylindrical Roller Bearing · 25mm Bore · 52mm OD · 18mm Width · GCr15 · GOST 5577 · OEM / Private Label Available
Parameter | Value |
Part Number | 66-42205AEM |
Cross Reference | 6642205AEM / 42205AEM |
Bearing Type | Cylindrical Roller Bearing |
GOST Type Code | 66 (Cylindrical Roller Series) |
Inner Diameter (d) | 25 mm |
Outer Diameter (D) | 52 mm |
Width (B) | 18 mm |
Standard | GOST 5577 |
Material | GCr15 / AISI 52100 / 100Cr6 |
Hardness | 60–64 HRC |
Sealing | Open (standard) · Sealed on request |
Precision Grade | P0 (standard) · P6 / P5 on request |
Internal Clearance | C0 (standard) · C2 / C3 on request |
Cage | Pressed steel (standard) · Machined brass on request |
Suffix AEM | Automotive/Engineering modified cage design |
Certification | ISO 9001 / TS 16949 |
Brand | Nexans Bearings (NKS) |
Origin | Liaocheng, Shandong, China |
⚠️ Installation Notice: The 66-42205AEM is a cylindrical roller bearing designed to carry radial loads only. It cannot sustain significant axial (thrust) loads. Always confirm the axial location method complies with the original equipment design before installation.
The Russian GOST bearing numbering system encodes bearing type, dimensions, and design features directly in the part number.
Code Segment | Meaning |
66 | Bearing type: Cylindrical Roller Bearing (GOST type code) |
42205 | Dimension series: bore 25 mm, OD 52 mm, width 18 mm |
AEM | Suffix: Automotive / Engineering Machinery — modified cage design for automotive gearbox duty |
The GOST 66-series cylindrical roller bearing corresponds to the international NUP205 / NU205 series. Dimensions are fully compatible with ISO 15 standards.
The 66-42205AEM is a single-row cylindrical roller bearing designed for Lada VAZ gearbox, driveshaft, and intermediate support applications.
Line contact between cylindrical rollers and raceways delivers significantly higher radial load capacity than equivalent-size ball bearings
Separable inner and outer rings — simplifies installation and replacement in gearbox assemblies
AEM modified cage — engineered for automotive gearbox vibration and shock load conditions
Open design — allows field lubrication with gearbox oil or grease
High radial stiffness — suitable for precision shaft positioning in manual gearboxes
GCr15 / AISI 52100 through-hardened steel — 60–64 HRC, full material traceability available
Vehicle / Application | Mounting Position |
Lada VAZ 2101 / 2102 / 2103 / 2104 / 2105 / 2106 / 2107 (Classic series) | Gearbox input shaft / countershaft bearing |
Lada VAZ 2108 / 2109 / 21099 / 2110 / 2111 / 2112 / 2113 / 2114 / 2115 | Gearbox bearing |
Lada Niva VAZ 2121 / 21213 / 21214 | Gearbox / transfer case bearing |
Russian & CIS Automotive Aftermarket | Gearbox overhaul kit component |
Light commercial vehicles (Russian market) | Transmission shaft bearing |
Brand / Standard | Part Number |
GOST (Russia) | 66-42205AEM |
ISO / International | NUP205 / NU205E |
SKF | NUP205ECP / NU205ECP |
FAG / Schaeffler | NUP205-E-TVP2 |
NSK | NUP205ET |
Timken | NUP205E |
Koyo | NUP205 |
Nexans Bearings (NKS) | 66-42205AEM |
⚠️ Cross-reference is for dimensional reference only. NUP-type (double-rib, can carry limited axial load in both directions) and NU-type (single-rib, radial load only) have different internal configurations. Always confirm the correct sub-type against your OEM workshop manual before substitution.
Q: Which Lada VAZ models use the 66-42205AEM bearing?
The 66-42205AEM is widely used in Lada VAZ Classic series (2101–2107) and front-wheel-drive series (2108–2115) manual gearbox assemblies. It is one of the most common gearbox bearings in the Russian and CIS automotive aftermarket.
Q: What is the difference between 66-42205AEM and NUP205?
The 66-42205AEM is manufactured to GOST 5577 standard. Dimensions (25×52×18mm) are identical to the international NUP205 standard. The AEM suffix denotes an automotive-duty modified cage design optimized for gearbox operating conditions.
Q: Can this bearing carry axial loads?
Cylindrical roller bearings (GOST 66-series) are designed primarily for radial loads. NUP-type variants can carry limited bidirectional axial loads due to the double-rib design. NU-type carries radial loads only. Confirm the correct sub-type per OEM specification.
Q: What lubrication is recommended?
Use NLGI Grade 2 lithium-complex grease or the gearbox oil specified by the vehicle manufacturer. Follow OEM-recommended lubrication intervals and oil change schedules.
Q: What is the correct installation procedure?
Press-fit installation using a bearing press or induction heater is recommended. Never strike the bearing directly with a hammer. Ensure the shaft and housing are clean, dimensionally correct, and free of burrs before installation.
Q: Is OEM / private-label packaging available?
Yes. Custom box printing (your brand / part number), laser-engraved part number and logo on the bearing ring, and full inner/outer branded packaging are all available. All IP rights remain yours. MOQ and pricing on request.
Q: What documentation is available?
GCr15 / AISI 52100 material certificates, dimensional inspection reports, hardness test reports (60–64 HRC), packing lists, commercial invoices, certificates of origin. SGS / BV / TÜV third-party inspection supported on request.
Q: What is the MOQ and lead time?
Minimum 1 pc accepted for sample evaluation. Volume pricing from 10 pcs. Standard lead time: 7–15 days ex-stock / 20–30 days for production orders. Trade terms: FOB Qingdao / CIF / EXW available.
Part No. | Dimensions (mm) | Type | Application |
6-7805Y (2101-3103020) | 26×57.15×17.462 | Tapered Roller Bearing | Front wheel hub — inner ring |
6-7804Y (2101-3103025) | 19.05×45.25×15.494 | Tapered Roller Bearing | Front wheel hub — outer ring |
66-42205AEM(this product) | 25×52×18 | Cylindrical Roller Bearing | Gearbox shaft bearing |
Website | |
+86-155-6283-9480 | |
Address | No.8, Bearing Development Zone, Liaocheng, Shandong, China |
