Drive wheels and load wheels often appear on the same forklift, AGV, pallet truck or warehouse vehicle, but they do not perform the same job. A drive wheel transfers torque from the motor to the floor. A load wheel mainly supports the vehicle and payload while allowing the equipment to move with low resistance.
Understanding this difference is important when selecting replacement wheels or developing a new material-handling vehicle. Using the wrong wheel structure can lead to poor traction, excessive motor load, bearing damage, uneven wear or insufficient load capacity.
This guide explains the functional and engineering differences between industrial drive wheels and polyurethane load wheels, as well as the information buyers should provide before requesting a quotation.
Quick answer:
Drive wheels transmit motor torque and control vehicle movement.
Load wheels support equipment weight and payload.
Drive-wheel selection focuses on traction, torque, heat and mounting accuracy.
Load-wheel selection focuses on load capacity, rolling resistance, bearings and impact.
Many forklifts and AGVs use both wheel types in the same chassis.
What Is a Drive Wheel?
A drive wheel is connected directly or indirectly to a motor, gearbox or powered axle. Its purpose is to transfer torque to the floor so the vehicle can accelerate, travel, turn and brake.
Drive wheels are commonly used on:
Electric forklifts
AGVs and AMRs
Electric pallet trucks
Stackers and reach trucks
Automated warehouse vehicles
Mining monorail transport equipment
Powered industrial carts
Because drive wheels transmit torque, buyers need to consider more than load capacity. Traction, braking, wheel hardness, rolling resistance, heat build-up, bore tolerance, keyway dimensions and tread-to-core bonding all affect performance.
What Is a Load Wheel?
A load wheel, sometimes called a carrying wheel or support wheel, primarily carries the weight of the equipment and its payload. It normally rotates freely around a bearing or bushing rather than being powered directly by a motor.
Load wheels are commonly found on:
Fork arms of pallet trucks
Electric stackers
Reach trucks
AGV chassis
Shuttle vehicles
Conveyor transfer carts
Heavy material-handling equipment
The main concerns for a load wheel are load distribution, bearing life, rolling resistance, resistance to impact and the ability to pass over floor joints or debris without permanent deformation.
Drive Wheels vs Load Wheels: Main Differences
| Comparison | Drive Wheels | Load Wheels |
|---|---|---|
| Main function | Transfer motor torque and move the vehicle | Support the vehicle and payload |
| Connection | Connected to a motor, gearbox, axle or drive hub | Usually rotates freely on bearings or bushings |
| Main performance concern | Traction, braking, torque transfer and heat control | Load capacity, rolling resistance and bearing performance |
| Typical mounting | Bore, keyway, spline, flange or clamping connection | Bearing, axle, spacer or fork-mounted assembly |
| Common wear pattern | Slip wear, edge wear, heat damage or tread separation | Compression, flat spots, bearing wear or impact damage |
| Dimensional priority | Outside diameter, runout, bore, keyway and hub alignment | Outside diameter, width, bearing bore and axle fit |
How Drive Wheels Transfer Torque
When the motor turns, torque is transferred through the wheel core to the polyurethane or rubber tread. Friction between the tread and floor then produces the force required to move the vehicle.
The wheel must provide sufficient grip without creating excessive rolling resistance. If the tread is too soft, it may deform and consume more energy. If it is too hard or unsuitable for the floor, the wheel may slip during acceleration or braking.
Important drive-wheel specifications include:
Motor torque and gear ratio
Normal and maximum travel speed
Vehicle acceleration and braking settings
Maximum dynamic load on the drive wheel
Tread material and Shore hardness
Outside diameter and tread width
Bore, keyway, spline or flange design
Floor material and contamination
How Load Wheels Carry and Distribute Weight
Load wheels support the equipment structure and payload. Their actual load can change as the vehicle lifts cargo, turns, crosses floor joints or travels on a ramp.
A simple calculation based on total vehicle weight divided by the number of wheels may not show the maximum load on each wheel. The position of the cargo, chassis geometry and wheel arrangement must also be considered.
Important load-wheel specifications include:
Maximum load per wheel
Number and arrangement of load wheels
Wheel diameter and tread width
Bearing type and axle diameter
Floor joints and obstacle height
Turning and side-loading conditions
Daily travel distance and operating hours
Why Polyurethane Is Used for Both Wheel Types
Polyurethane is widely used for powered and supporting wheels because its formulation can be adjusted for different combinations of load, traction, rolling resistance, wear and environmental resistance.
For drive wheels, the polyurethane tread must provide torque transfer and resist heat generated by repeated deformation. For load wheels, the material must support concentrated loads while resisting compression, abrasion and impact.
The same hardness should not automatically be used for both wheel types. A vehicle may require one formulation for the powered wheel and another for the supporting wheels.
Drive-Wheel and Load-Wheel Requirements by Application
| Application | Drive-Wheel Priority | Load-Wheel Priority |
|---|---|---|
| Electric forklift | Traction, braking, dynamic load and resistance to edge wear | High carrying capacity, impact resistance and bearing durability |
| AGV or AMR | Low rolling resistance, diameter consistency and accurate motion | Stable support, low noise and predictable rolling resistance |
| Electric pallet truck | Frequent starting, turning and compact installation | High load concentration under the fork arms |
| Stacker crane | Precise torque transfer and controlled acceleration | Stable alignment and long continuous operating life |
| Mining transport equipment | High torque, impact resistance and strong tread bonding | High static and dynamic load under abrasive conditions |
Buyers working with forklifts and pallet trucks can review the forklift wheel series. For AGVs, shuttle vehicles and warehouse automation, see our warehouse and logistics wheel solutions .
Can a Drive Wheel Be Used as a Load Wheel?
A drive wheel may physically support weight, but that does not mean it is the most suitable load wheel. Its hub, tread and mounting structure may have been designed primarily for torque transmission rather than free rolling.
Similarly, a load wheel should not be used as a powered wheel unless its core, bore, keyway and tread bond are designed to transmit the required torque.
When replacing either wheel type, identify its original function before selecting an equivalent product.
What Information Should Be Provided for Selection?
Equipment type and model
Wheel function: powered or free rolling
Maximum load per wheel
Travel speed and daily operating hours
Floor material and route conditions
Outside diameter and wheel widths
Bore, keyway, bearing or axle dimensions
Operating temperature and chemical exposure
Existing drawing, 3D model or wheel sample
Standard and Custom Wheels from WSCS
WSCS supplies drive wheels and load wheels for forklifts, AGVs, pallet trucks, warehouse automation and heavy industrial equipment. Standard products are suitable when the dimensions and operating requirements match an existing wheel.
Equipment that requires a special tread, core, bearing arrangement, bore, keyway or wheel profile can be developed through our custom industrial wheel manufacturing service.
Send us the equipment information, wheel drawing or used sample together with the load, speed and floor conditions. This allows our team to determine whether the application requires a powered drive wheel, a supporting load wheel or a matched set of both.
Frequently Asked Questions
What is the main difference between a drive wheel and a load wheel?
A drive wheel transfers torque from the motor to the floor. A load wheel mainly supports the weight of the equipment and payload while rotating freely.
Do forklifts use both drive wheels and load wheels?
Yes. Many electric forklifts and pallet trucks use a powered drive wheel together with several load or support wheels.
Can drive wheels and load wheels use the same polyurethane hardness?
They can in some applications, but the correct hardness depends on their different functions, loads, speeds and traction requirements.
Which wheel requires tighter dimensional accuracy?
Both require accurate dimensions. Drive wheels may require especially close control of the bore, keyway, concentricity and outside diameter because these dimensions affect torque transfer and motion accuracy.
Can WSCS produce both wheel types from an existing sample?
Yes. A sample or drawing can be reviewed together with the equipment load, speed, floor and mounting information before sample production.
