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Gas-powered trench compactor with black handle frame and gray metal body, viewed from right angle against white background

MBW R442 Rammer – 11" Compaction Rammer

by MBW Inc
Made In USA
$3,522.75
Engine Option

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Description

Drive powerful compaction in tight trenches with a MBW Rammer 442. Built for granular, mixed, and heavy clay soils, this compactor delivers faster production with elevated bellows, patented slide bearings, and an 11" ductile iron shoe engineered for long‑term durability.
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MBW R442 Compaction Rammer

Compact soil in tight trenches and confined work areas without sacrificing control or stability. The MBW R442 is built for crews working in granular, mixed, and cohesive soils where a maneuverable, high‑impact rammer is needed to prepare foundations, utilities, and backfill.

The unit is designed for trench environments with elevated bellows placement that helps protect components from ground contact and debris exposure. A contoured fuel tank supports extended operation and helps manage engine noise during use. Power is supplied by Honda engines, offering dependable performance for daily jobsite demands.

The 11‑inch ductile iron shoe is engineered for durability in repeated tamping applications, and the polyethylene slide bearings are designed to reduce friction and support consistent movement within the percussion system.

This model is suitable for crews working in heavy clay soils and other challenging materials where controlled, high‑impact compaction is required. The percussion system and bellows are backed by a manufacturer warranty on key components.

Overall, the R442 provides a dependable option for contractors and municipalities needing a compact rammer that fits tight spaces while supporting consistent compaction performance across a range of soil types.

Features

• Elevated bellows placement for trench applications
• Patented polyethylene slide bearings provide minimal internal wear
• 11” ductile cast iron tamping shoe

US & International Patents

5 YEAR WARRANTY ON BELLOWS AND PERCUSSION SYSTEM BEARINGS

Ships via LTL freight. Shipping cost calculated at checkout.

MBW Rammer Compactor Brochure

Download PDF

MBW R442 Compactor Operator's Manual

Download PDF
  • MBW Rammer Assesmbly
  • MBW Rammers
  • MBW Rammer Demonstration
Product Warranty

MBW R442 Rammer – 11" Compaction Rammer (SKU: 422H) includes a standard one-year manufacturer warranty covering defects in materials and workmanship under normal use.

Product Extended Warranty Plans

Extended warranty plans may be available for select products. Contact us to confirm eligibility and coverage details.

Specifications
R442
Shoe Size
11 x 13 in (28 x 33 cm)
Engine Option
Honda GX100 (150 lb/68 kg) Honda GXR120 (150 lb/68 kg) Honda GX100 w/Oversized Air Filter (154 lb/70 kg)
Travel Speed
Up to 55 ft/min (16 m/min)
Compaction Depth*
Up to 18 in (45 cm)
Compaction Area
3025 sq ft/hr (281 sq m/hr)
Percussion Rate
Up to 720 blows/min

*Clean sand, optimum moisture. MBW recommends that lifts not exceed 12″
( ) Metric Measurements.
Specifications subject to change without notice.