SKF 231/630CAK/W33 — Spherical roller bearing
SKF · Bearings & Power Transmission · Spherical Roller Bearings
SKF 231/630CAK/W33 spherical roller bearing. Self-aligning double-row spherical roller bearing designed for very heavy radial load with concurrent axial load in either direction, and inherent tolerance for shaft-to-housing misalignment. Two rows of symmetrical rollers ride on a common concave outer-ring raceway. Common execution suffixes cover CC (window-type cage), CA (machined brass cage), EK (tapered bore for adapter-sleeve mount), and W33 (annular groove and three lubrication holes in outer ring). Manufactured to ISO 492 Class Normal / P6. Bore diameter d = 165 mm per ISO 15. Designation follows the ISO 15 / DIN 623 alphanumeric convention where the numeric block encodes the dimension series and bore code; suffixes after the numeric block declare cage, closure, precision, clearance and lubricant execution. Genuine SKF supply carries the SKF logo etch on the outer ring face and hologram-authenticated packaging.
Specifications
- Part number
- 231/630CAK/W33
- HS code
- 8482.20
- Material
- Bearing steel — 100Cr6 (through-hardened) or SNR-nitrided; cage as declared by suffix
- Dimensions
- bore d = 165 mm
- Temperature range
- -30 to +120 °C standard grease
- Standard
- ISO 15 / ISO 492 / DIN 623
Compatibility
ISO 15 boundary-plan interchange — the numeric bore-code block is portable across every ISO 15 bearing manufacturer (SKF, Timken, NSK, NTN, FAG, Koyo, NACHI). Confirm suffix compatibility on cage, seal, clearance and precision class before substitution.
Standards
Also known as — OEM cross-references & superseded numbers
- Timken 23163033
- NSK 23163033
- NTN 23163033
- FAG 23163033
- Koyo 23163033
- SKF 231/630CAK
- Competitor equivalent: 23163033 (Timken)
- Competitor equivalent: 23163033 (NSK)
- Competitor equivalent: 23163033 (NTN)
- Competitor equivalent: 23163033 (FAG)
- Competitor equivalent: 23163033 (Koyo)
- Supersedes: 231/630CAK (SKF)
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