04/21/20
Page 3
Champion
®
RC300
9. FEED TUBE HOUSING
The feed tube housing is aligned in the main bore of the hammer. It sits against a
shoulder in the case and is held in position by the backhead, collection tube housing
and belleville washer combination. The feed tube housing locates and aligns the feed
tube.
10. FEED TUBE COMPRESSION RING
A feed tube compression ring sits between the feed tube and the feed tube housing
and keeps the feed tube assembly tight.
11. FEED TUBE
The feed tube supplies the main air into the chambers located in the piston. It seats
on a shoulder in the feed tube housing and is designed with a long bearing surface to
maintain alignment in the feed tube housing.
12. PISTON
The piston functions as the only moving part in the hammer, controlling the operational
air cycle. The percussive action of the piston striking the bit transfers the energy through
the bit in order to fracture rock formations.
13. CASE
The case is designed to contain the internal parts which make up the hammer assembly.
The case is hardened to resist wear and to extend life in abrasive conditions.
14. BIT BEARING
The bit bearing guides the top end of the bit to insure proper alignment between the
piston and the bit. The bit bearing is positioned in the chuck end of the case and is
held in place by the snap ring.
15. SNAP RING
The snap ring sits in a groove in the case and retains the bit bearing.
Summary of Contents for Champion RC300
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