T4DB 170/VA812 Railway Tapered Roller Bearing

T4DB 170/VA812 is a tapered roller bearing designation used in demanding bearing applications where controlled radial and axial load carrying capability is required. The supplied technical table lists a 170 mm bore, 230 mm outside diameter and 32 mm total bearing width. For purchasing and replacement work, the complete designation should be confirmed because suffixes and special execution codes can define application, material, lubrication or performance requirements. Boyuan Bearing supplies tapered roller bearings for international distributors, bearing traders and industrial customers.

Technical Specifications

Parameter	Value
Designation	T4DB 170/VA812
Bearing type	Tapered Roller Bearing
Bore d	170 mm
Outside diameter D	230 mm
Total width T	32 mm
Inner ring width B	30 mm
Outer ring width C	23 mm
Dynamic load rating C	229 kN
Static load rating C0	390 kN
Limiting speed	2800 r/min
Mass	3.33 kg

Railway and Industrial Applications

The T4DB 170/VA812 bearing can be considered for railway and heavy-duty bearing applications where a tapered roller bearing is specified. Typical selection factors include shaft and housing dimensions, radial and axial loading, rotational speed, mounting arrangement, lubrication and operating temperature. For railway spare parts, buyers should compare the complete designation and dimensional drawing rather than selecting by bore and outside diameter alone.

Bearing Supply

Boyuan Bearing can quote T4DB 170/VA812 and related tapered roller bearing models for export orders. Please send the required quantity, complete designation, original/OEM requirement, packaging requirement and destination country when requesting a quotation.