Danuser SM40 Post Driver, 40" Stroke, 96" Hoses, 300 lb Hammer, Skid Steer Mount

Overview

The Danuser SM40 Intimidator is a powerful 40″ hydraulic hammer post driver designed for skid steers, compact loaders, and utility tractors with a universal quick-attach plate. Its free-fall hammer design delivers consistent, full-depth strikes to drive fence posts, guard rails, median dividers, tent stakes, T‑posts, pipe fence, and even railroad ties, eliminating the need for manual labor or expensive rented equipment.

Key Features

40″ Free-Fall Hammer Stroke
The SM40 can achieve full-stroke impact on every cycle or use short-stroke mode for precise depth control. No return springs or rebound cylinders to wear out.

300 lb Hammer, 500 lb with Weight Kit
A standard 300 lb hammer delivers up to 1,025 ft‑lbs of energy. Add the optional 200 lb weight kit to reach 500 lb and boost impact energy to 1,709 ft‑lbs. Ground-driven force reaches 82,000 lb when fully weighted.

Hydraulic Tilt (±20°) Option
An optional tilt attachment enables 20° of side-to-side angle, allowing straight post setting even on slopes and uneven terrain.

Optional Hydraulic Grapple
Add an optional hydraulic grapple to perform one-person post installation, from picking up the post to fully driving it, without leaving the cab.

Universal Quick-Attach Mount
Compatible with all major skid steers and compact loader brands. Requires a hydraulic circuit supplying 12–30 GPM at 1,500–3,000 PSI.

Heavy-Duty Construction
The hammer housing and mount steel are 3/4″-thick and built to withstand repeated heavy cyclic loads. Greasable pivot points and hoses employ industrial-grade fittings for durability.

Technical Specifications

Performance

The SM40 delivers full-energy hammer drops at rates reaching 35 impacts per minute with full hydraulic flow, efficiently driving posts through rock and hard-packed soils. Short-stroke mode enables careful depth control around utilities or in sensitive areas. The optional grapple and tilt allow safe precision and one-person operation, even on sloped work zones.

FAQ

What machines will it fit?
Designed to fit skid steers, compact loaders, or tractors with a universal quick-attach plate and hydraulic supply (12–30 GPM, 1,500–3,000 PSI).

Can it drive different post types?
Yes, it works with wood posts, pipe, guard rail, T-posts, and even 6–8″ railroad ties. Add drive accessories to support a variety of materials.

How does tilt help?
Tilt keeps the hammer vertical on slopes, preventing posts from leaning. Ideal for roadside, vineyard, or sloped fence lines.

Can I operate it solo?
Yes, with the optional grapple you can load and drive posts without leaving the cab, a major time-saver.

Is it durable?
Absolutely, the SM40 is built from ¾″ steel plate, with free-fall hammer design, greasable pivot pins, and shielded hydraulic lines for long-term rugged use.