SKF 31328X Tapered roller bearing

SKF · Bearings & Power Transmission · Tapered Roller Bearings · Sweden · skf.com

Part Number
31328X · HS 8482.20

SKF 31328X tapered roller bearing. Single-row tapered roller bearing designed to take combined heavy radial and one-direction axial load. Rollers, inner ring raceway (cone) and outer ring raceway (cup) are ground to converge at a common apex on the bearing axis. Two bearings are always mounted in opposition so the pair carries axial load in both directions and can be preloaded to remove all internal clearance. Metric dimensions per ISO 355 / ISO 492 Class Normal. Bore diameter d = 140 mm per ISO 15.

Technical Specifications

Type	Tapered roller bearing
Designation	SKF 31328X
Standard	ISO 15 / DIN 623 dimension plan; ISO 492 Class Normal precision
HS code	8482.20
Bore diameter	140 mm
Outside diameter	300 mm
Width, total	77 mm
Width, inner ring	70 mm
Width, outer ring	47 mm
Contact angle	28.8 °
Basic dynamic load rating	693 kN
Basic static load rating	900 kN
Reference speed	1500 r/min
Limiting speed	2200 r/min
Bearing part	Complete bearing
Number of rows	1
Locating feature, bearing outer ring	Without
Bore type	Cylindrical
Cage	Sheet metal
Arrangement of contact angle (double-row bearing)	Not applicable
Matched arrangement	No
Coating	Without
Sealing	Without
Lubricant	None
Relubrication feature	Without
Unit system	Metric
Indicative carbon footprint for new product	83.6 kg CO2e
Product net weight	22.6 kg
eClass code	23-05-09-10
UNSPSC code	31171516

Properties

Material	Bearing steel — 100Cr6 (through-hardened) or SNR-nitrided; cage as declared by suffix
Temperature range	-30 to +120 °C standard grease
Primary standard	ISO 15 / ISO 492 / DIN 623
Dimensions	bore d = 140 mm
MOQ	1

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

ISO 15
ISO 492
DIN 623

Cross-References

Timken 31328
NSK 31328
NTN 31328
FAG 31328
Koyo 31328

Attached Documents

SKF 31328X Tapered roller bearing — Specification sheet