OTR Steel Wheel For Mining Dump Trucks — 21-11.25/1.7

Rim Overview

The 21-11.25/1.7 is a heavy-duty OTR steel wheel designed for mining dump trucks and large off-road haul vehicles. With a 21-inch drop-center profile and 11.25-inch rim width, it supports wide-section OTR bias tires commonly used in quarry, open-pit and heavy earthmoving operations. The reinforced flange and high-strength steel structure help resist impact loading, high inflation pressure, and frequent stop-start cycles on rough mine roads.

 

This wheel is built for sustained heavy-load service and consistent dimensional accuracy:

High-strength steel body with reinforced flange for OTR operating conditions

Precision-formed drop center to support safe tire mounting and bead seating

Surface treatment by shot blasting and primer coating; custom RAL colors available

Dimensional and visual inspection before dispatch, with reports available on request

Our facility in Tangyin, Anyang operates under ISO 9001 and IATF 16949 systems, combining OTR wheel manufacturing experience with in-house engineering and custom development capability.

PCD, offset, center bore, bolt hole quantity and valve hole position can be confirmed according to customer drawings.

This specification is typically used where large dump trucks and heavy haul vehicles operate under high load and poor road conditions:
 Open-Pit Mining: Haul trucks moving ore, waste rock and overburden
 Quarry Operations: Dump trucks and rigid haulers on crushed-stone surfaces
 Large Earthmoving Projects: Heavy off-road trucks on unpaved haul roads
 Industrial Haulage: Plants and ports using large OTR wheel assemblies
Because OTR wheel fitment depends on hub size, tire section width and vehicle load rating, please share your drawing or photos before ordering.

We can develop the wheel according to your vehicle hub and tire combination:
 Adjust PCD, offset, center bore and bolt hole size
 Modify rim width, flange profile and valve hole position
 Upgrade material thickness or reinforcement for higher load demand
 Apply custom paint, marking or branding
 Supply wheel and tire assemblies when required
All non-standard requests are reviewed by engineering before production. If new tooling is needed, we will confirm it at the quotation stage.
 

We support single-piece samples and batch OEM orders. After receiving your parameters, we prepare a drawing or data sheet for confirmation so that production follows approved dimensions. Lead time depends on specification, quantity and tooling status.

Q: What kind of tire fits the 21-11.25/1.7 wheel?
A: It is intended for 21-inch wide-section OTR bias tires used on mining and quarry dump trucks. The exact tire model should be confirmed by drawing or sample.
Q: Can you produce this wheel with different PCD or offset?
A: Yes. PCD, offset, center bore, bolt hole quantity and other dimensions can be customized according to your hub drawing.
Q: Is this wheel suitable for mining dump trucks?
A: Yes. The drop-center design, reinforced flange and heavy-duty steel construction are suitable for mining dump trucks and similar off-road haul vehicles.
Q: What information is needed for a quotation?
A: Please provide wheel size, PCD, offset, center bore, bolt hole quantity, bolt hole diameter, finish requirement, application vehicle and target tire if available.