Support Roller / Yoke-Type Track Roller

PWTR50110-2RS Support Roller Bearing | 50×110×32 mm | Crowned Outer Ring

50 mm Bore × 110 mm OD × 32 mm Inner Ring Width · Crowned Outer Ring · Double-Row Full-Complement Needle Rollers · 2RS Seals · 100% Dimensionally Inspected

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PWTR50110-2RS Support Roller Bearing

The PWTR50110-2RS is a yoke-type support roller bearing designed for track-guided and rolling-contact applications in industrial machinery. It features a 50 mm bore, 110 mm outside diameter, and 32 mm inner ring width.

Its double-row full-complement needle roller design accommodates substantial radial loads. The outer ring uses a crowned (convex) profile, which helps compensate for minor misalignment and reduces edge loading where the roller contacts the track surface.

The 2RS sealing arrangement uses NBR (nitrile rubber) seals on both sides to help retain lubricant and protect the internal rolling components from contaminants. The inner ring is provided with lubrication holes. Actual load capacity and operating suitability depend on the bearing specification and working conditions.

EKB supplies PWTR50110-2RS support rollers for industrial replacement and equipment maintenance. Contact us to confirm the required specification, availability, and lead time.

Product Specifications

Note: Confirm the complete dimensions and technical specifications against the supplier's drawing before ordering or replacing an existing bearing.

Key Features

• Double-Row Full-Complement Needle Roller Design
  The full-complement arrangement uses a high number of rolling elements, supporting substantial load-carrying capacity within a compact bearing design. The permissible load depends on the actual bearing construction and operating conditions.

• Crowned Outer Ring
  The crowned (convex) outer ring profile helps compensate for minor misalignment and reduces edge loading where the roller contacts the track surface.

• Sealed Bearing Configuration
  The 2RS version uses NBR (nitrile rubber) seals on both sides to help retain lubricant and limit the entry of dust and other contaminants. Seal performance should be confirmed for the intended operating environment.

• Inner Ring with Lubrication Holes
  The inner ring is provided with lubrication holes for re-lubrication in suitable applications.

• Designed for Track and Rolling-Contact Applications
  Support rollers are used where a rotating roller runs against a track, cam, or other guiding surface. Installation geometry, contact conditions, and alignment are important when selecting a replacement.

• Specification-Based Replacement
  When replacing an existing PWTR50110-2RS, check the complete dimensions and design rather than matching the model number alone. Differences in roller arrangement, outer-ring profile, sealing, or load requirements may affect interchangeability.

Measured Dimensions & Quality Verification

Every PWTR50110-2RS supplied by EKB is 100% dimensionally inspected before shipment.

The measured dimensions of each bearing are verified to be within the tolerance ranges specified by the national standard (GB/T). Actual measurement data and the dimensional drawing are available on request.

Measured Dimensional Drawing

Actual measured dimensions within GB/T standard tolerances · 100% inspected

Request the dimensional inspection report with your quotation, and we will provide the actual measured values for your reference.

Typical Applications

Depending on the equipment design and operating conditions, PWTR-type support rollers may be used in:

• Cam and track mechanisms

• Industrial conveying equipment

• Material-handling machinery

• Guide-roller assemblies

• Industrial transmission and lifting mechanisms

• Other machinery requiring a support roller bearing

Please provide the equipment model or application details when requesting a replacement. This helps determine whether the bearing is suitable for the actual working conditions.

Dimensions and Replacement Compatibility

The basic dimensions of PWTR50110-2RS are:

• Bore: 50 mm (1.969")

• Outside diameter: 110 mm (4.331")

• Inner ring width: 32 mm (1.260")

• Outer ring width: 30 mm (1.181")

Other important details include the crowned outer-ring profile, sealing design, internal construction, clearance, lubrication, and load requirements.

A bearing with the same bore, outside diameter, and width is not necessarily an interchangeable replacement.

If you are replacing an existing bearing, please send the original part number, dimensional drawing, photographs, or a physical sample. EKB can help check the available specification before an order is placed.

Not sure which bearing you need? See our Bearing Identification Service.

Need a PWTR50110-2RS Replacement?

EKB supports industrial buyers, maintenance teams, and bearing distributors sourcing support rollers and other hard-to-find bearing products.

When contacting us, please include any information available:

• Original bearing number

• Required quantity

• Dimensions or technical drawing

• Equipment model or application

• Operating speed and load requirements, if known

• Required delivery schedule

We will check the requested configuration, availability, and lead time with the applicable product specifications.

Browse This Category

Looking for other support rollers or yoke-type track rollers? See our full range of Support Roller & Yoke Type Track Roller Bearings.

Related Guide

Track Roller Linear Guides: Two Needs for Lubrication

Learn how lubrication affects track-roller and support-roller assemblies, and why the correct lubrication arrangement extends service life.

About EKB

EKB Bearing is an integrated manufacturer and exporter of bearings. We combine our own 18,000 m² production facility — equipped with 13 automated production lines and 42 high-precision testing units — with our international sales team, and our bearings are exported to 66 countries. Our manufacturing facility operates under a formal ISO 9001:2015 quality management system (GB/T 19001-2016).

We support customers with difficult-to-source bearing requirements, including special-dimension, roller, inch-size, and replacement bearings.

Frequently Asked Questions

What are the dimensions of PWTR50110-2RS?
The basic dimensions are 50 mm bore, 110 mm outside diameter, and 32 mm inner ring width. The outer ring width is 30 mm.

Does PWTR50110-2RS have a crowned outer ring?
Yes. The outer ring features a crowned (convex) profile, which helps compensate for minor misalignment and reduce edge stress when the roller runs against a track surface.

What type of bearing is PWTR50110-2RS?
It is a support roller, also described as a yoke-type track roller. It uses a double-row full-complement needle roller design.

What is the radial clearance of PWTR50110-2RS?
The radial internal clearance is CN, with values in the range 0.030–0.060 mm.

What are the sealing and material details?
The bearing uses 2RS NBR (nitrile rubber) seals and is manufactured from bearing steel (GCr15), with a hardness of 58–64 HRC.

What is the weight of PWTR50110-2RS?
The weight is approximately 1.68 kg.

Are the bearings 100% inspected?
Yes. Every PWTR50110-2RS supplied by EKB is 100% dimensionally inspected before shipment. Measured dimensions are verified within the tolerance ranges of the national standard (GB/T), and the dimensional inspection report is available on request.

Can PWTR50110-2RS replace another support roller?
Not based on dimensions alone. Check the complete model designation, mounting arrangement, dimensions, outer-ring profile, sealing, and operating requirements before substitution.

How can I obtain a quotation?
Send EKB the model number, quantity, required delivery date, and any available drawings or photographs. We will confirm availability and lead time for the requested configuration.

Request a Quote

Looking for PWTR50110-2RS or a replacement support roller?
Send us your part number, dimensions, drawing, or product photo.
EKB will help check the specification and available supply options before you order.

Contact EKB for a Quotation