Sports Attack Set of Three (3) Junior Baseball Wheels

The Junior Hack Attack baseball pitching machine relies on three throwing wheels working together - two top wheels and one bottom wheel - to grip and deliver the ball at the dialed-in speed and spin. This replacement set includes all three wheels needed to service the machine's throwing mechanism in one purchase, rather than ordering wheels individually.

Throwing wheels are subject to wear from ball contact over time. Sports Attack notes that the wheel surface itself does not peel off; what often appears as peeling is actually build-up of ball material on the wheel surface, which can be cleaned rather than requiring replacement. However, wheels that show true visual damage after cleaning should be replaced to maintain accurate, consistent pitch delivery.

Ball selection directly affects wheel longevity: the machine is designed to throw leather, poly, or foam balls, and using synthetic balls is not recommended under any circumstances, as they wear the wheels rapidly and leave a residue that causes inconsistent throws. Mixing ball types or ages during a session is also a common cause of erratic pitching, separate from wheel condition.

Sports Attack recommends an annual maintenance check of all throwing wheels for build-up and visual damage, in addition to lubricating the machine's elevation, inside/outside, and horizontal controls with lithium grease. The motors themselves use sealed bearings and require no additional lubrication.

Replacement instructions and dedicated how-to videos are provided for installing new wheels, including guidance on the top wheels and bottom wheel separately, and a reminder to retain the keyway key during removal. Motors and controllers for the Junior Hack Attack are available separately through Sports Attack customer service using the machine's serial number.

How do I confirm this wheel set fits my machine?

Check the label at the bottom of the speed control dial - it will display the machine name, which should read Junior Hack Attack.

My wheels look like they're peeling - do I need this replacement set?

Not necessarily. The wheel surface itself does not peel off; what looks like peeling is usually ball material build-up, which can often be cleaned off following Sports Attack's cleaning instructions before replacing the wheels.

What type of balls should I use to protect the throwing wheels?

Use leather, poly, or foam baseballs, and keep them dry and consistent in type and age. Avoid synthetic balls entirely, as they wear the wheels quickly and leave a residue that causes inaccurate throws.

Is JoySportStore an authorized Sports Attack dealer?

Yes. JoySportStore is an authorized Sports Attack dealer, so every machine ships brand-new with the full Sports Attack manufacturer warranty and factory-backed parts and service support.