GQZ R30-76 Separable Single Row Tapered Roller Bearing 30×68×18.5mm For Motorcycle Steering Head & Automotive Gearboxes

R30-76 is a special inch metric single-row separable tapered roller bearing, split into inner cone and outer cup. It can bear combined heavy radial and unidirectional axial loads, stable under shock and variable load conditions. Widely used for motorcycle steering head, light vehicle gearbox, automobile differential and small construction machinery.

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Model: R30-76

Dimension: Inner d30mm × Outer D68mm × Total width T18.5mm

Cone width B: 12.875mm, Cup width C: 17.5mm

Structure: Separable inner cone + outer cup, stamped steel cage

Material: GCr15 high carbon chrome bearing steel

Full load capacity data and CAD drawings available on request

• Separable cone and cup design supports single-piece replacement to cut spare part inventory cost
• Optimized logarithmic superfinished roller surface reduces friction, heat and running noise
• High hardness quenched steel resists abrasion, deformation and impact load
• Special non-standard size fully interchangeable with original R30-76 OEM bearings
• Custom EP extreme pressure grease, anti-rust coating and OEM laser marking supported

👉 Extend service life of motorcycle steering and automotive transmission assemblies

• Motorcycle, ATV steering head stem assembly
• Light passenger car, pickup gearbox and differential parts
• Small agricultural machinery wheel hub transmission
• Mini construction equipment rotary support shafts
• Automobile generator and auxiliary transmission mechanisms

• 25+ years professional manufacturer of special tapered roller bearings
• Exported to over 50 countries worldwide
• Strict dimension, hardness and matching clearance inspection before delivery
• 24-hour fast technical reply and installation preload guidance
• Stable bulk supply for auto spare parts and motorcycle distributors

👉 We focus on quality, reliability, and long-term partnership

• GCr15 raw material metallurgy & hardness inspection
• Precision superfinishing grinding for tapered raceway and rollers
• Complete quenching & tempering heat stabilization
• Matching clearance test between cone and cup
• Full dimensional tolerance inspection for non-standard special bearings

Looking for R30-76 separable tapered roller bearings for steering and gearbox repair?

👉 Send inquiry to get:

• Fast quotation within 24 hours
• Engineer installation torque & preload suggestions
• Custom lubricant and precision grade options
• Competitive factory price

Contact our sales team for full technical datasheets and quotation