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305115 Compact Metric Tapered Roller Bearing
- Compact High Stiffness: Provides heavy load support in a space-saving 15 mm overall width profile.
- Low Operational Drag: Super-finished raceway geometry minimizes frictional torque loss and operating noise.
- Case-Hardened Toughness: Heat-treated steel raceways resist impact loading and surface spalling during dynamic usage.
- Easy Press-Fitting: Separable cup and cone facilitate independent press-fit installation on shafts and inside housings.
Technical Data
| Technical Parameter | Metric Value |
| Inner Bore Diameter (d) | 30.00 mm |
| Outer Diameter (D) | 51.00 mm |
| Total Width (T) | 15.00 mm |
| Precision Standard | ABEC-1 / P0 |
Product Specifications
| Specification | Details |
| Item Type | Compact Metric Tapered Roller Bearing |
| Model Number | 305115 |
| Bearing Design | Single Row Tapered |
| Material | High-Purity GCr15 Chrome Steel |
| Cage Material | Precision Stamped Steel |
Product Introduction
The 305115 is a specialized compact metric tapered roller bearing designed to deliver high dynamic load performance within space-constrained mechanical housings. Sized at 30 x 51 x 15 mm, this bearing provides high radial stiffness and axial guiding accuracy despite its slim 51 mm outer diameter envelope. Manufactured in our automated precision grinding facility, the 305115 features micro-honed raceways that drastically reduce running drag and vibration, making it a favorite choice among global B2B distributors for motorcycle steering stem assemblies, electric drives, and light machinery gearboxes.
Applications
Motorcycle and ATV steering stem / head tube assemblies.
Small electric motor gear reducers and power tools.
Light industrial drive systems and pump shafts.
FAQ
Q: What is the primary advantage of the 305115 bearing?A: It combines a generous 30 mm inner bore with a thin cross-section, allowing high-strength shafts to be housed in extremely compact outer frames.
Q: Does it require pre-lubrication before installation?A: Yes, it is shipped with a temporary rust inhibitor and must be packed with suitable bearing grease or oil prior to equipment operation.
OEM & Custom Service
We support industrial manufacturers with custom pre-greased packaging options, laser-engraved serial tracking, and bespoke bulk packaging for automated factory assembly lines.
Packing & Delivery
Immersed in high-grade anti-rust oil, poly-wrapped in VCI barrier film, boxed individually, and palletized securely for sea or air freight cargo.
