Hammers B4

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Key Specs

Operating Weight - With Tool: 350.5 lb; 159 kg

Energy Class: 272.9 ft·lbf; 370 J

Machine Class: 2-5 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders; 2-5 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders

B4
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Overview

Used for demolition and construction applications.

Features At A Glance

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Application

CatÂ® B Hammers are suitable for use in a wide range of construction and light demolition applications â€“ such as breaking concrete sidewalks and driveways, pavement, roads, masonry, site prep and landscaping, and breaking frozen ground for utility repairs.

Ergonomically Positioned Hydraulic Lines

Ergonomically positioned hydraulic lines are designed to optimize serviceability, are easily accessible and require no special tools. Housing has been positioned to protect against force and dirt during impact but allow for wrench access. Hydraulic lines and back head pressure can be checked and charged while breaker is mounted to machine, allowing quick monitoring of breakerâ€™s condition.

Gas Fired Design

Gas fired design delivers consistently high production over time making the breaker reliable in applications such as concrete, asphalt, rock and light trenching.

Flat Top/Top Mount Style

Flat top/top-mount style provides a larger work area and excellent operator visibility with a common footprint and hole pattern for optimum versatility. Top-mount style increases impact power by keeping breaker force and stick force in line. A top-mount bracket will transfer back significantly less recoil and bending stress into the end of the stick, resulting in reduced impact on machine structures. Full complement of mounting brackets is available to suite coupler or pin-on preference.

Newly Designed Skid Steer loader Mounting Bracket

Newly designed skid steer loader mounting bracket features enhanced hose routing and improved ingress/egress with new bolt-on step and updated central step. Brackets are compatible with all B series hammers, H Model Hammers, and older E Series Hammers.

Slip Fit Bushings

Slip fit bushings are field replaceable and easy to maintain due to one locking pin, extending wear life and reducing owning and operating costs. Upper bushing rotates 360Â°, lower bushing has two positions and can be rotated 90Â°.

Gas fired design delivers consistently high production over time making the breaker reliable in applications such as concrete, asphalt, rock and light trenching.

Tool mounted OMM holder is sealed from the elements and includes all operation manuals and maintenance guides required for proper operation of the hammer (Skid Steer Loader bracket only).

Every B Series Hammer comes with:

Tool Kit w/Storage Box
2 Tools (1 x Conical and 1 x Transverse Chisel)
Maintenance Kit

Product Specifications for B4

Operating Weight - With Tool	350.5 lb 159 kg
Energy Class	272.9 ft·lbf 370 J
Machine Class	2-5 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders 2-5 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders
Tool Shaft Diameter	2.1 in 53 mm
Impact Frequency	600-1100 bpm 600-1100 bpm
Minimum Operating Pressure	1491.9 psi 10286 kPa
Minimum Carrier Weight	5599.7 lb 2540 kg
Optimal Hydraulic Flow	25-50 lpm (6.6-13.2 gpm) 25-50 lpm (6.6-13.2 gpm)
Overall Width	11.8 in 300 mm
Overall Length	13.4 in 340 mm
Overall Height	46.9 in 1190 mm
Height - Without Tool	32.7 in 830 mm
Sound Level	128 dB 128 dB
Mounting Bracket Size	Small-Medium Small-Medium

Product Specifications for B4

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Operating Weight - With Tool	350.5 lb 159 kg
Energy Class	272.9 ft·lbf 370 J
Machine Class	2-5 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders 2-5 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders
Tool Shaft Diameter	2.1 in 53 mm
Impact Frequency	600-1100 bpm 600-1100 bpm
Minimum Operating Pressure	1491.9 psi 10286 kPa
Minimum Carrier Weight	5599.7 lb 2540 kg
Optimal Hydraulic Flow	25-50 lpm (6.6-13.2 gpm) 25-50 lpm (6.6-13.2 gpm)
Overall Width	11.8 in 300 mm
Overall Length	13.4 in 340 mm
Overall Height	46.9 in 1190 mm
Height - Without Tool	32.7 in 830 mm
Sound Level	128 dB 128 dB
Mounting Bracket Size	Small-Medium Small-Medium

See how B4 compares against frequently compared products.

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Operating Weight - With Tool: 350.5 lb; 159 kg
Energy Class: 272.9 ft·lbf; 370 J
Machine Class: 2-5 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders; 2-5 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders

Hammers

B2 Side Mount

Operating Weight - With Tool: 272.5 lb; 123.6 kg
Energy Class: 213.9 ft·lbf; 290 J
Machine Class: 1 Ton Mini Excavators; 1 Ton Mini Excavators

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Hammers

B4s

Operating Weight - With Tool: 357.1 lb; 162 kg
Energy Class: 272.9 ft·lbf; 370 J
Machine Class: 2-5 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders; 2-5 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders