Rhino PD-55 chuck adapters are precision-fit inserts that drop into the PD-55 master chuck and match the PD-55 pneumatic post driver to the exact post being driven. Thirteen profiles cover round posts from 1 in. through 3-1/2 in., U-channel from the 1 lb to 4 lb weight classes, Master Halco Post Master posts, Telespar break-away anchor systems and low-drive channel installs each sending impact straight down the post centerline.
Adapters lock in with the chucks standard retention and swap in seconds with no tools, so one driver moves between fence, sign and anchor work in a single shift; a thicker-walled 2 in. Round HD version is built for production crews running high daily cycles. See the full family of Rhino PD chucks and adapters, or start with the Rhino post driver buyers guide if you are matching a driver to your post mix.
- Round adapters in seven sizes: 1, 1-1/2, 2, 2 HD, 2-1/2, 3 and 3-1/2 in.
- U-channel adapters for the 1 to 1.5 lb, 2 to 2.75 lb and 3 to 4 lb post classes
- Dedicated profiles for Post Master fence posts, Telespar break-away anchors and low-drive channel posts
- 2 in. Round HD adapter carries thicker walls for high-cycle production crews
- Drops into the PD-55 master chuck and locks with standard retention tool-free swaps in seconds
- Transfers full impact force down the post centerline for clean, straight drives
- Stocked by Crowder Supply in Denver in the popular profiles
PD-55 Chuck Adapter FAQ
Which adapter do I need for my posts?
Match the adapter to the post: round adapters cover 1 in. through 3-1/2 in. diameters, U-channel adapters cover the 1 to 1.5 lb, 2 to 2.75 lb and 3 to 4 lb classes, and dedicated profiles handle Post Master posts, Telespar break-away anchors and low-drive channel installs thirteen profiles for the post drivers fleet.
Is there an adapter for Master Halco Post Master posts?
Yes a dedicated Post Master adapter drives Master Halcos patented steel fence post while preserving its three-rib profile.
How do the adapters install in the driver?
Each insert drops into the PD-55 master chuck and locks with the chucks standard retention, so swaps between sizes take seconds and no tools.

