BT2-8671 Railway Tapered Roller Bearing Unit (TBU)

Ready-to-Mount TBU Design: Pre-assembled, pre-set clearance, and pre-lubricated at the factory to ensure error-free and rapid axle mounting.
Advanced Sealing Technology: High-performance integrated seals keep the internal grease perfectly clean while locking out rain, snow, and abrasive iron dust from the tracks.
Friction Reduction: Optimized roller-to-flange contact profiles minimize rotational friction, lowering operating temperatures and extending grease life.
Severe Thrust Handling: The double-row tapered configuration effortlessly manages the heavy bidirectional lateral forces typical of winding railway routes.

Technical Data

Technical Parameter	Metric Value
Model Reference	BT2-8671
Internal Clearance	Factory Pre-Set
Precision Standard	Railway TBU Standard
Operating Temp Range	-40°C to +120°C (Typical)

Product Specifications

Specification	Details
Item Type	Tapered Bearing Unit (TBU) for Railways
Model Number	BT2-8671
Structure	Double Row Tapered (Pre-Adjusted)
Sealing Type	Integrated Heavy-Duty Labyrinth Seals
Lubrication	Pre-Greased (Long-Life Railway Grease)

Product Introduction

The BT2-8671 is a highly advanced Tapered Bearing Unit (TBU) developed specifically for railway bogie axle applications. This double-row, pre-adjusted, and pre-lubricated bearing unit eliminates the need for manual clearance setting during installation, significantly reducing railway maintenance downtime. Designed to handle extreme combined loads—massive vertical radial forces from the train's weight and high lateral thrust forces from navigating curves—the BT2-8671 ensures maximum operational safety. Constructed with integrated heavy-duty seals to prevent moisture and track debris ingress, this unit is a premium solution for global railway overhaul contractors and fleet managers.

Applications

Modern passenger train and locomotive wheelsets.
High-capacity freight train bogies.
Heavy-duty industrial transfer cars in steel mills and mining.

FAQ

Q: What is the advantage of a TBU like the BT2-8671 over standard bearings?
A: A TBU is a sealed, pre-greased, and pre-adjusted unit. It eliminates installation errors related to manual clearance shimming and grease packing, drastically cutting labor time at the rail depot.
Q: Are these units re-lubricatable?
A: While designed for exceptionally long maintenance intervals, specific re-lubrication protocols depend on the rail fleet's maintenance schedule.

OEM & Custom Service

We provide comprehensive B2B OEM support, including batch serialization for railway safety tracking, custom rust-preventative coatings for coastal shipping, and customized heavy-duty wooden crating.

Packing & Delivery

Each TBU is individually protected with anti-corrosion VCI packaging, encased in custom-fitted polyurethane foam, and secured inside reinforced export wooden crates.