Rhino PD-110 Master Chuck
The Master Chuck is the starting point of every Rhino post driving setup the component that seats over the post head and channels the driver’s energy down into the post itself. Matching the right chuck to the post keeps the driver’s full impact force traveling straight along the centerline, setting posts faster and with less wasted effort.
- 4 1/4″ Master Chuck A round-profile chuck sized for posts up to four and a quarter inches, seating cleanly over the post head and keeping force tracking straight down the centerline. A common pick for heavier round stock on highway and fence work.
- 4″ Round Master Chuck Built for four-inch round posts, this chuck wraps the post head and holds it square to the driver so every blow lands true. A go-to for sign and guardrail crews running standard round stock.
- 4″ Square Master Chuck Shaped to receive four-inch square posts, gripping the flat faces and corners so the post stays aligned through the full drive. Keeps square stock from spinning or walking under repeated impact.
- 4″ by 6″ Wood Master Chuck Sized for four-by-six wood posts, cradling the timber and spreading the driver’s force across the post head to limit splitting and brooming. Suited to wood guardrail and landscape timber work.
- H-Column 4″ by 6″ Master Chuck Made to seat over H-column sections in the four-by-six range, capturing the web and flanges so the column drives straight. Built for crews setting structural H-pile. Requires the matching Drive Cap.
- 4 3/4″ Master Chuck A round chuck for posts up to four and three-quarter inches, holding larger round stock centered and square to the driver. Handles the step up from standard four-inch posts without losing alignment.
- Slotted Sheet Pile Master Chuck Designed to engage the interlock of slotted sheet piling, holding the sheet plumb while the driver seats it. Keeps sheets tracking together along the wall line.
- 5 1/2″ Master Chuck Sized for five-and-a-half-inch posts, taking on larger-diameter round stock while keeping impact running down the centerline. A choice for heavy post and pile work.
- 6″ Square Master Chuck Built to receive six-inch square posts, gripping the larger profile and holding it aligned through every blow. Suited to heavy square stock on larger structural and barrier jobs.
- 7″ Master Chuck The large-capacity chuck in the line, sized for seven-inch posts and built to keep oversized stock centered and driving true. For the biggest posts and piles the driver will take.

