Tianhe Conveying Machine Co.,Ltd · Wuxi Jiangsu China
Metal Roller Bearings MTR

Gravity Roller Metal Cover

The MTR-89X3.0-20 is a gravity roller metal cover designed for a tube diameter of 89 mm, wall thickness of 3.0 mm, and shaft diameter of 20 mm. It is used to enclose the end of a gravity roller, providing a robust housing for the roller shaft and bearing assembly. The unit is made from metal and is intended for integration into gravity roller systems used in material handling applications. It supports free rotation and is suitable for medium to heavy load conveying environments.

Gravity roller metal end cover MTR-89X3.0-20 fitted over a roller shaft with 89 mm tube and 20 mm shaft
Gravity roller metal end cover MTR-89X3.0-20 fitted over a roller shaft with 89 mm tube and 20 mm shaft

Product Overview

The MTR-89X3.0-20 is a gravity roller metal cover designed for a tube diameter of 89 mm, wall thickness of 3.0 mm, and shaft diameter of 20 mm. It is used to enclose the end of a gravity roller, providing a robust housing for the roller shaft and bearing assembly. The unit is made from metal and is intended for integration into gravity roller systems used in material handling applications. It supports free rotation and is suitable for medium to heavy load conveying environments.

Part of the Metal Roller Bearings MTR range, used in Conveyor OEMs and System Integrators.

Key Benefits

  • Designed for tube diameter of 89 mm and shaft diameter of 20 mm
  • Metal housing provides durability in industrial environments
  • Matches standard gravity roller dimensions for direct replacement
  • Supports free running operation with low resistance
  • Prevents debris from entering the roller end during operation

Application Scenarios

  • Gravity roller conveyors in warehouse loading and unloading zones
  • Assembly lines where medium to heavy components are moved by hand
  • Mould manufacturing lines requiring reliable roller end caps
  • Electrical parts manufacturing where consistent roller performance is needed
  • Engine manufacturing facilities using gravity rollers for part transfer

Who It Is For

  • Conveyor system integrators building gravity roller lines
  • Material handling equipment builders sourcing end caps for roller assemblies
  • Industrial distributors stocking replacement parts for gravity rollers
  • Production line builders needing consistent end cap fit for standard tubes

Problems It Solves

  • Roller ends that allow debris to enter and jam the shaft or bearing
  • Inconsistent end caps that do not match tube diameter or shaft size
  • Frequent replacement due to weak or poorly fitting plastic covers
  • Misalignment caused by mismatched or loose end caps on roller shafts
  • Lack of a standard metal cover for 89 mm tube with 20 mm shaft

Technical Features

  • Specifically designed for 89 mm tube diameter with 3.0 mm wall thickness
  • Shaft diameter of 20 mm matches standard roller shafts
  • Metal housing provides structural strength and wear resistance
  • Housing fits over the end of the roller to protect the bearing and shaft
  • Prevents lateral movement and maintains alignment during operation

Materials

  • Metal housing for strength and long-term use in industrial settings
  • Designed to fit over steel, stainless steel, or PVC tubes
  • No plastic components to degrade under repeated use or exposure

Quality Control

  • Dimensional check against 89 mm tube diameter and 20 mm shaft
  • Visual inspection for burrs, cracks, or deformation in the metal housing
  • Fit test on sample roller to confirm proper end cap seating

Customization Options

  • Special bore sizes available upon request for large volume orders
  • Alternative materials not specified, but metal housing is standard
  • Custom dimensions possible based on customer drawings and order volume

Use Guide

  • Verify that the roller tube is 89 mm in diameter and 3.0 mm wall thickness
  • Ensure the shaft is 20 mm in diameter before installation
  • Slide the cover over the roller end until it seats fully against the tube
  • Check that the cover does not rotate or loosen during operation
  • Use only with rollers designed for this end cap size and shaft

Specifications

Model NoMTR-89X3.0-20
Tube Diameter89 mm
Wall Thickness3.0 mm
Shaft Diameter20 mm
MaterialMetal
ApplicationGravity roller end cap

Manufacturing Process

Step 1

Metal blanking and forming to match the 89 mm tube and 20 mm shaft

Step 2

Hole drilling for shaft alignment and mounting if required

Step 3

Surface finishing to prevent sharp edges and improve durability

Step 4

Final inspection for dimensional accuracy before packing

Compared With Other Options

Plastic end capsMetal cover offers greater strength and resistance to impact and wear
Standard plastic roller bearingsThis metal cover is for end use, not bearing function, and provides structural protection
Press fit end capsThis metal cover is designed for a fixed fit over the tube and shaft, not for press mounting

Gravity Roller Metal Cover Questions

What is the tube diameter this cover fits?

It is designed for a tube diameter of 89 mm.

What shaft size does this cover support?

It fits a shaft diameter of 20 mm.

Is the cover made of metal?

Yes, the housing is made of metal for durability.

Can I get a different bore size?

Special bore sizes are available upon request for large volume orders.

Is this cover for gravity rollers?

Yes, it is specifically designed as an end cap for gravity rollers.

Does it fit PVC tubes?

Yes, it fits PVC tubes as long as the outer diameter is 89 mm and wall thickness is 3.0 mm.

Get a Price for Gravity Roller Metal Cover

Send the quantity and any material or surface option you need, and a quotation comes back against this model number.