Wheel hubs play an important role in the operation of a Wright Stander. When they are in good working condition, the mower will move properly and cut the lawn that the owner intends to clear. When they are sheared, the mower won’t move.
These round-shaped members usually have four bolts that hold the wheel in its place while it rotates on its axis. They also have a grooved hole in the center where the hydraulic motor axle with a woodruff key enters.
How Wheel Hubs Operate
The operation of wheel hubs depends on their inter-locking bond with the axle of the hydraulic motors that power the wheels of the mower. This interlock is created by a woodruff key that enters the groove on the wheel hub, making them one unit.
When the stander’s control levers are moved in the forward or backward direction, the woodruff keys will transmit that movement from the hydraulic motors to the wheel hubs, Thus enabling the wheels to rotate and making the mower to move.
Woodruff keys play a vital role in this whole moving process; When they are in good working condition, the Stander will move; When they break or shear, the Wheel hubs won’t be able to move the mower. Therefore, it’s important to know the possible causes of wheel hub failure and avoid them.
Effects of Speed on Wheel Hubs
Wright Stander commercial mowers can run up to more than ten miles per hour. Such speed can help lawn care operators to finish large lawns in a very short time but, if the operator doesn’t exercise care when speeding, it can have a damaging effect on the mower’s wheel hubs.
Racing through the lawn back and forth without reasonably slowing down at every turn exerts a shearing force on either the wheel hub or the woodruff key, continuing in this routine of doing things, can ultimately widen the groove on the wheel hub or bevel the woodruff key itself.
Making sharp turns on concrete tracks or similar areas while at a high speed can also have a damaging effect on your wheel hubs in the long run. The frictional force between the wheels and the track will cause the mower’s load to exert an excessive force on the wheel hub. This force can have a remarkably harmful effect on the mower’s wheel hubs.
No wonder owner’s manuals advise operators to reduce speed when making turns and exercise caution when driving the mower at a high speed.
- Slow down when making turns.
- Avoid making sharp turns on a solid concrete track.
- Include checking the condition of your wheel hubs on your regular routine maintenance schedule.
Effects of Instant Braking on Wheel Hubs
Most commercial mowers don’t have clear brake pads that operators can use to stop or slow down the equipment. They instead use the control levers to increase or reduce the mower’s speed.
When the operator instantly turns the mower in the opposite direction while the mower is moving at a high speed, the mower’s momentum will exert an exessive force on the wheel hubs. This can result into a shearing effect either on the wheel hub groove or the woodruff key. Making instant brakes when the mower is running at a high speed can also damage the wheel hubs.
- Reduce speed before changing the direction of the control lever.
- Mow in such a way that avoids instant change of directions.
- Remember that the mower’s braking mechanism depends on the wheel hub.
It can be true that some operators don’t find any problem with speed but, driving your mower at a reasonable speed and exercising caution when speeding, making turns, or turning the mower in the opposite direction can help you extend the lifespan of your mower’s wheel hubs and help you save the funds you would spend on unnecessary repairs.