Series: SD | Energy: 900 J | Carrier: 6,600–16,500 lb (3–7.5 t)
The Montabert SC 28 is a hydraulic breaker built for contractors, rental fleets, demolition crews, quarry operators, and equipment owners who need a breaker that fits their carrier correctly and delivers reliable output in the field. This model sits in the SD/SC range and is well suited for sidewalk removal, curb and gutter work, utility cuts, light landscaping, interior demolition, driveway removal, and similar light-to-medium breaking tasks. When a breaker is matched correctly to the carrier — by weight class, hydraulic flow, and operating pressure — operators get better production, less unnecessary vibration transmitted back to the machine, reduced wear on the attachment and bracket, and fewer problems with hoses, bushings, retainers, and seals.
The Montabert SC 28 is designed for 6,600–16,500 lb (3–7.5 t), with a service weight of 511 lb. The tool steel diameter is 2.8 in, oil flow requirements are 10.5–20 GPM, operating pressure is 1,740 PSI, and the impact rate is 630–1,420 BPM. The energy class is 900 J. These specifications define where this breaker fits in the lineup. A unit that is too small for the job will force the operator to work the tool harder than intended, causing overheating and premature wear. A unit that is too large for the carrier can create excess hydraulic heat, damage mounting hardware, and shorten the service life of both the hammer and the machine.
Maintenance discipline is as important as correct sizing. A hydraulic hammer operates in some of the most demanding conditions on a jobsite — dust, shock load, side load, heat, moisture, and thousands of impact cycles per hour. Even a well-built breaker will lose performance if the lower bushing wears undetected, the tool is run dry, the seals harden from heat cycling, nitrogen or accumulator pressure drifts out of specification, or hydraulic flow and pressure fall outside the recommended range. Owners should inspect the tool steel, retainers, bushings, tie rods, hoses, fittings, and the grease system on a regular schedule. A properly maintained hammer hits harder, runs cooler, and protects the carrier better than a neglected one. For many contractors, the real value of this model is not the purchase price alone — it is the ability to keep it running through repairable wear rather than replacing the whole breaker.
The design characteristics of the Montabert SC 28 include SC/SD-series construction, Montabert gas accumulator technology, low oil flow requirements suited to mini excavator auxiliary circuits, and a compact lower assembly designed for rental fleet durability and contractor-owned machine performance in light utility and demolition work. These attributes make it well suited for applications where productivity, controllability, carrier protection, and access to service support all matter. When comparing this model against similar breakers, pay close attention to carrier size match, hydraulic circuit setup, tool steel availability, and the parts support network available in your area. Matching the hammer correctly to the carrier improves efficiency and helps prevent common issues such as weak hitting, slow cycling, tool overheating, premature bushing wear, and cracked mounting hardware.
HBS provides complete support for the Montabert SC 28, including hydraulic hammer repairs, full rebuilds, routine maintenance, and sales. Parts stocked and available for this model include chisels (2.8 in tool steel diameter), tie rods, upper and lower bushings, retainer pins, accumulator diaphragms or membranes, hydraulic seals and seal kits, front head components, and hoses and fittings. Whether this breaker is leaking oil, hitting weak, cycling slowly, overheating, wearing tools too fast, breaking retainers, or due for a full overhaul, HBS can diagnose the issue and return it to working condition. Contact HBS for service pricing, parts availability, rebuild options, and expert guidance on matching this hammer to the right carrier and application.
Key Features
- Impact energy of 900 J at 630–1,420 BPM positions the Montabert SC 28 as a capable mid-range compact breaker for 3–7.5 t mini excavators, providing enough energy output for consistent performance on sidewalk demolition, utility cuts, and driveway removal without exceeding the auxiliary circuit limits of small carrier hydraulic systems
- Low oil flow requirement of 10.5–20 GPM at 1,740 PSI fits the auxiliary circuit capacity of common mini excavators including Cat 305, Kubota KX040, Bobcat E35, and similar machines, eliminating the flow and pressure mismatches that cause elevated return-line temperatures and premature seal failures in this carrier weight class
- SC/SD-series construction provides Montabert’s proven structural design in a compact form factor, maintaining front head and cylinder alignment under 630–1,420 BPM cyclic shock loading to extend lower bushing and retainer service life beyond what is achievable with lower-quality fabricated housing designs in this weight class
- HBS stocks parts for the Montabert SC 28 including chisels (2.8 in tool steel), tie rods, upper and lower bushings, retainer pins, accumulator components, hydraulic seal kits, front head parts, and hoses — supporting repairs, rebuilds, and preventive maintenance without extended wait times
Key Specifications & Service Points
- Recommended carrier match: 6,600–16,500 lb (3–7.5 t) — service weight 511 lb
- Core performance: energy class 900 J; impact rate 630–1,420 BPM; tool steel 2.8 in
- Hydraulic requirements: oil flow 10.5–20 GPM; operating pressure 1,740 PSI
- Parts available from HBS: chisels (2.8 in tool steel), tie rods, upper and lower bushings, retainer pins, accumulator components, hydraulic seal kits, front head parts, and hoses
