SKF 71988ACMB — Angular contact ball bearing
SKF · Bearings & Power Transmission · Angular Contact Ball Bearings
SKF 71988ACMB angular contact ball bearing. Single-row angular contact ball bearing configured to take combined radial and one-direction axial load. Contact angle 15°, 25°, 30° or 40° per suffix (BE / BEP / BECBP execution). Two bearings are commonly mounted in an opposing pair (back-to-back, face-to-face or tandem) so the pair carries axial load in both directions and takes moment load. Manufactured to ISO 492 Class Normal. Bore diameter d = 440 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
- 71988ACMB
- HS code
- 8482.10
- Material
- Bearing steel — 100Cr6 (through-hardened) or SNR-nitrided; cage as declared by suffix
- Dimensions
- bore d = 440 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Also known as — OEM cross-references & superseded numbers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 71988
- NSK 71988
- NTN 71988
- FAG 71988
- Koyo 71988
- Competitor equivalent: 71988 (Timken)
- Competitor equivalent: 71988 (NSK)
- Competitor equivalent: 71988 (NTN)
- Competitor equivalent: 71988 (FAG)
- Competitor equivalent: 71988 (Koyo)
Bearings & Power Transmission · More SKF · Printable datasheet