CR21 → Rear Wheel: Drive wheel | Front Wheel: Bearing wheel
 
BTCR26 / BTCR22 → Rear Wheel: Drive wheel | Front Wheel: Bearing wheel
 
BTCR28 → Rear Wheel: Drive wheel | Front Wheel: Bearing wheel
 
BTCR30 → Rear Wheel: Drive wheel | Front Wheel: Bearing wheel
 
BTCR35 → Rear Wheel: Bearing wheel | Front Wheel: Drive wheel
 
BTCR36 (yellow version) → Rear Wheel: Bearing wheel | Front Wheel: Drive wheel
 
BTCR36 (grey version) → Rear Wheel: Drive wheel | Front Wheel: Bearing wheel
 
BTCR51 → Rear Wheel: Bearing wheel | Front Wheel: Drive wheel
 
Sweeper40 → Rear Wheel: Drive wheel | Front Wheel: Bearing wheel
 
CSR49 → Rear Wheel: Drive wheel | Front Wheel: Bearing wheel
 
CSR53 → Rear Wheel: Drive wheel | Front Wheel: Bearing wheel
 
Sweeper75 → Rear Wheel: Drive wheel | Front Wheel: Bearing wheel
 
CSR75 → Rear Wheel: Drive wheel | Front Wheel: Bearing wheel