Description
Asphalt road beds and reinforced bridge slabs resist weak electric jackhammers. The Chicago Pneumatic CP 1260 60lb paving breaker slams through dense highway aggregate with 1300 blows per minute. Municipal utility crews gain unyielding pavement demolition force, yet the sheer 64-pound tool weight causes operator back exhaustion during horizontal or angled breaking maneuvers.
The internal percussion mechanism features an alloy steel front head secured by high-tensile steel side rods with polyurethane shock absorbers. A hardened steel cylinder sleeve houses a reversible alloy steel piston engineered to absorb continuous kinetic recoil. The case-hardened 1-1/8-inch by 6-inch hex shank chuck bushing prevents steel bit galling. This heavy forged architecture withstands violent piston impacts, concrete grit intrusion, and moisture contamination common on unheated outdoor job sites.
Field Hardware Performance Matrix
Road demolition contractors require rigid paving breakers that deliver maximum percussive kinetic energy without hardware failure. The structural components detailed below outline the heavy mechanical build of this pneumatic demolition hammer.
- 1300 blows per minute stroke rate fractures cured highway pavement and reinforced concrete
- 1-1/8-inch by 6-inch hex shank bushing retains heavy bull point chisels under high side-loads
- Reversible alloy steel piston extends internal drive component service life under heavy impact cycles
- Polyurethane front head shock absorbers cushion side rod spring retainers to stop bolt shear
- Forged steel T-handle housing gives the operator balanced vertical stance during pavement demolition
- Screened 3/4-inch NPT swivel air inlet stops large line scale from entering the valve chamber
- Internal flapper valve distribution system meters compressed air volume with minimal clearance loss
Dyno Bench Load Telemetry
Dyno air testing records 73 CFM continuous air consumption at 90 PSI dynamic under full penetration. Operating through fifty feet of 3/4-inch bull hose produces a 16 PSI dynamic line pressure drop. Adiabatic expansion plunges internal exhaust temperatures to 19°F, generating frost rings around the exhaust deflector in humid morning air. The percussive piston delivers 85 ft-lbs of single-impact kinetic energy, generating a massive 108 dBA sound pressure level at the operator ear.
Field Service Operational Directives
Dragging heavy 3/4-inch wire-braid hose creates severe operator drag across broken road beds. Do not purchase this paving breaker for light 120-volt portable compressors or 3/8-inch shop air lines. Air starvation causes piston short-stroking and induces severe chuck bushing galling. Heavy highway demolition crews must maintain this tool using rigid service intervals.
- Pour four ounces of ISO VG 32 pneumatic tool lubricant into the air inlet before each work shift
- Verify side rod nut torque measures 150 ft-lbs each week to prevent front head bolt breakage
- Blow line moisture from compressor supply lines before connecting the swivel whip hose
Commercial Warranty Package Inventory
Chicago Pneumatic supports this pavement breaker with a 1-Year limited warranty against metallurgical flaws and manufacturing defects. Unboxing reveals the 60-pound paving breaker, a pre-installed 3/4-inch NPT swivel air inlet, a steel chuck latch assembly, and an illustrated technical parts catalog.