US
Metric

Overview

Cat® H120 S Performance hammers are hydraulic attachments designed for rock breaking, concrete demolition, and site preparation tasks. Commonly used in construction, roadwork, trenching, and demolition applications, these hammers deliver consistent breaking performance in demanding jobsite conditions.
Impact Energy Class
3500.00 ft·lbf
4745.00 J
Blows per Minute
350 to 620
Maximum Operating Weight
4101.00 lb
1860.00 kg
Minimum Operating Weight
3256.00 lb
1480.00 kg
Minimum Carrier Weight
35300.00 lb
16.00 t
Maximum Carrier Weight
59500.00 lb
27.00 t
Tool Shaft Diameter
4.70 in
120.00 mm
Maximum Operating Pressure
2175.00 psi
15000.00 kPa
Minimum Operating Pressure
1885.00 psi
13000.00 kPa
Maximum Rated Flow
45.00 gal/min
170.00 l/min
Minimum Rated Flow
26.00 gal/min
100.00 l/min
Rated Flow - Minimum
26.00 gpm
100.00 L/min
Rated Flow - Maximum
45.00 gpm
170.00 L/min
Features

Automatic hammer operation

Provides blank firing protection by stopping piston movement when no material is beneath the tool. An internal buffering system helps reduce machine vibration, and standard silencing supports operation in noise-regulated environments.

Adjustable impact control

Allows operators to select high piston speed or maximum power settings. An oil-fired operating cycle delivers power with each blow, while critical hydraulic components are protected within the hammer housing.

Simplified service design

Includes standard onboard autolube for continuous greasing during operation. Features a slip-fit, 90-degree rotatable lower bushing for field replacement, an oil-fired design that eliminates gas charge checks, and convenient maintenance access points.

Integrated asset tracking

Cat asset tracking is available on all hammers. Attachment location and status can be monitored in VisionLink™, and geofence alerts can be configured when assets leave designated site boundaries.