Rotation Sleeve – 7/8 X 4 1/4″, Tamco/Toku part number 430127H6D, listed at Crowder Supply as TK-430127H6D. It drives or indexes rotation. When it wears, the tool still hammers but stops turning the steel evenly.
Crowder’s breakdowns list this part on the TJ 20 Rock Drill (RD 40). That machine is the Tamco/Toku TJ-20 Rock Drill if you are pricing a replacement rather than a repair. Worth matching the reference number on the diagram against your own machine before you order the same part number can sit in more than one position.
Work through the rest of the assembly on the same breakdown, or start over from the parts diagram hub. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 430127H6D
- Manufacturer: Tamco/Toku
- Crowder SKU: TK-430127H6D
- Listed on breakdowns for: TJ 20 Rock Drill (RD 40)

