Cat® B-Prefix Hammers feature low owning and operating costs, versatility, ease of use
June 4, 2018
Cat® B-Prefix hydraulic hammers, available in B4(s) and B6(s) silenced and B4 and B6 non-silenced versions, are designed for “plug-and-play” operation with a range of compact equipment—while delivering optimum life-cycle value. The new hammers are suited for skid steer loaders, multi-terrain loaders, compact track loaders, mini hydraulic excavators (3- to 8-ton operating weights), and backhoe loaders working in a range of construction and light-demolition applications, including site prep, landscaping, masonry, and concrete breaking. The B-Prefix hammers use a simple design that ensures reliability, versatility, ease-of-use and maintenance. As a package solution, the matching Caterpillar-designed hydraulic kits are also offered and the best fit for Cat machines, providing customers a breaker package with superior design and benefits.
Quality engineered
- Design
- Simple, reliable, industry-standard modular design with two moving parts in the piston and valve
- Flat-top mounting enables compact working envelope and compatibility with a full complement of brackets to suit preference of coupler, linkage kinematics, or machine size
- Field service
- Bushings are field-replaceable, and lower bushing can be rotated 90 degrees for improved wear performance
- Included toolbox contains charging kit, hammer paste, and spare parts
- Housings are designed to facilitate common maintenance items. Grease fitting and gas pressure check point are easily accessed with hammer on machine
- Gas operation
- Gas-fired operation cycle delivers consistent, long-term high production
- Major components
- Cylinder, back-head, front-head, piston, and tool are manufactured with high – quality materials and processes
- Housings
- Heavy-duty housing construction protects against breakage and wear
- Piston
- Piston transfers long shock waves into material; piston diameters are matched for maximum energy transfer; piston design and surface finish provide superior oil retention and seal life
- Oil-control valve
- Inward-type oil-control valve has high structural integrity and low failure rate
- Mounting brackets
- Interchangeability between H-prefix and B-prefix models
Tool types for the new hammers include moil, cone, parallel and transverse chisel, and blunt, allowing the hammer to be adapted to an extensive range of applications.
Top-Mount Product Specifications
| B4 | B4s | B6 | B6s | |
|---|---|---|---|---|
| Carrier weight, lb. (kg) | 5,600 (2 540) – 7,000 (3 175) | 5,600 (2 540) – 7,000 (3 175) | 8,000 (3 629) – 12,000 (5 443) | 8,000 (3 629) – 12,000 (5 443) |
| Operating weight, lb. (kg)* | 351 (159) | 357 (162) | 571 (259) | 611 (277) |
| Energy class, ft. lb. (J) | 273 (370) | 273 (370) | 502 (680) | 502 (680) |
| Impact frequency, blow per minute | 600 – 1,100 | 600 – 1,100 | 500 – 900 | 500 – 900 |
| Hydraulic flow, gpm (lpm) | 7 – 13 (25 – 50) |
7 – 13 (25 – 50) |
11 – 19 (40 – 70) |
11 – 19 (40 – 70) |
*Operating weight is Breaker and Tool, without the bracket.
