Every bogie maintenance engineer knows the frustration: excessive hunting motion, premature wear plate failure, and unstable ride quality that forces premature component replacement. These issues don't just cost money – they compromise safety and increase downtime.

Our railway side bearing for bogie is engineered to eliminate these pain points. Manufactured in strict compliance with AAR M-948 and TB/T 2813 standards， this constant contact side bearing delivers superior stability and extended service life for freight cars, locomotives, and passenger coaches.

Why do railway operators choose our bogie side bearing?

• AAR M-948 compliant – Fully certified to the latest AAR side bearing specifications

• Constant contact design – Metal-to-metal construction instantly counteracts bogie rolling vibrations

• Wide load capacity range – Available in 3,000 – 8,000 lbs working height carrying capacity

• JC type for K2/K6 bogies – Widely applied for C70, C80B and other general railway freight car models

• Factory-direct pricing – Eliminate intermediaries without sacrificing quality

Technical Specifications

Our side bearing is available in multiple configurations to match your specific bogie requirements:

Key components included:

• Elastic side bearing body

• Side bearing wear plate

• Side bearing seat

• Roller & roller shaft

• Adjusting pad & gasket

What Makes Our Railway Side Bearing Stand Out?

✅ AAR M-948 Full Compliance – Our side bearings are manufactured and tested to meet AAR Specification M-948, the industry benchmark for truck side bearing performance. For heavy-haul applications, we also support AAR M-976 compliance for cars with gross rail load exceeding 268,000 lbs.

✅ Constant Contact Stability – The unique metal-to-metal design instantly counteracts bogie rolling vibrations, weakening friction and energy before they impact vehicle stability. This design enhances tracking performance and improves curve negotiation – critical for freight operations with tight schedules and heavy loads.

✅ Superior Wear Resistance – Our side bearing wear plates are crafted from high-hardness materials (BHN 277–341 per AAR standards), significantly reducing surface abrasion and extending component life.

✅ Double-Acting Versatility (JC Type) – The JC type constant contact side bearing serves dual functions: it acts as both a constant contact elastic side bearing and a gap side bearing. This design provides appropriate rotation resistance moment between bogie and car body, effectively suppressing hunting motion while maintaining smooth curve passing capability.

✅ Complete Traceability – From raw material to final inspection, every production step is documented with batch numbers and material grades for full lifecycle tracking.

Quality Control & Factory Capabilities

Certifications: ISO 9001, AAR M-948 Compliant, TB/T 2813

Packaging: Standard export wooden crates with anti-rust treatment and foam padding to prevent transit damage. Container-loading available for sea or land freight.

Lead Time: 30–60 days depending on order quantity and specifications.