Cat H55E Hydraulic Hammer🔵 Mid
🟢 Standard Flow
✓ Runs on standard auxiliary flow
✓ Fits most skid steers, including small-frame
View on cat.com →
Overview
The Cat H55E is a compact hydraulic hammer designed for Cat skid steers and small CTLs. Part of Cat Work Tools' H-series, the H55E is suited for concrete demolition, frozen pavement, and rock in tight urban spaces where larger machines cannot work. Available through Cat dealers across Canada as part of their broad Work Tools lineup.
Canada Availability
Available through Cat Work Tools dealers across Canada.
Key Facts
- Model: Cat H55E
- Brand: Cat Work Tools
- Type: hydraulic hammer
- Class: compact skid steer
- Application: concrete demolition, frozen ground, urban rock work
- Mount: Cat quick attach (BOCE)
- Weight: 500–900 lbs
- Hydraulic flow: 8–20 GPM
✅ Specs sourced from cat.com · Last verified: March 2026
Is This Right For You?
✅ Buy if…
- You break large reinforced concrete foundations, thick rock, or concrete retaining walls regularly
- Your skid steer is a large-frame machine (80+ HP) rated for a heavy hammer attachment
- Production rate matters — heavy-duty breakers complete demolition jobs significantly faster than medium class
⛔ Skip if…
- Your machine is medium-frame or smaller — a heavy breaker can exceed carrier weight class limits and damage hydraulics
- Occasional light demolition is your only use — a medium-duty breaker handles that range at lower cost
🔍 Also consider…
- Medium-duty hydraulic breaker for smaller machines and occasional demolition
- Light-duty breaker for compact machines doing concrete curb or small slab work
🔧 Machine Compatibility
Compatible with all skid steer brands and compact track loaders via universal SSQA quick attach. Mid-frame machines (S450–S650 class) are the most common fit.
About Cat in Canada
Caterpillar attachments are backed by the largest dealer network in Canada, with service centres in every major city. OEM quality with the assurance of nationwide parts and support.
Care & Maintenance
- Check nitrogen buffer gas pressure at the start of every season and whenever impact energy feels reduced — low gas pressure is the most common cause of reduced performance
- Lubricate the tool (chisel) bushing and retainer pins before every use — dry bushings accelerate side-loading wear on both the bushing and the tool shank
- Inspect the lower bushing for wear after every 40 hours — a worn bushing allows chisel wobble, reducing impact energy delivery and accelerating shank wear
- Never blank-fire the breaker — operating without material contact destroys the internal valve in minutes; this is the most common cause of breaker failures
- Verify return-line back-pressure annually — back-pressure exceeding the breaker's rated limit destroys the valve seal progressively and may not be immediately obvious
How to Connect
- Attach breaker using Bob-Tach
- Connect single aux hydraulic circuit (breakers use one-way flow)
- Set machine to single-action aux mode if available
- Run 5 seconds at idle before working to allow oil to circulate
⚠ Safety NoteBreakers use single-direction flow. Do not run breaker in same position for more than 30 seconds — move to avoid blank-firing damage.
⚒️ Before You Buy a Hydraulic Breaker
Breaker sizing and hydraulic matching are critical — an oversized or underpowered breaker wears out faster and can damage your machine.
- Size the breaker class to your machine's rated operating capacity (ROC) Breaker sizing guide →
- Verify your machine's GPM and PSI output match the breaker's requirement Hydraulic flow guide →
- Confirm anti-blank-fire protection — protects both the breaker and your machine
Find a Breaker Dealer →
Complete the job — you might also need:
✅ Last checked: March 2026
Source: skidsteerattachments.ca/catalog/hydraulic-breakers/cat-h55e-hydraulic-breaker/
Ready to Buy? Check These First
⚙️
Confirm Machine Fit
Verify your machine's hydraulic flow meets this attachment's requirements before ordering. High-flow attachments need 25–45+ GPM — standard flow machines won't run them properly.
Check your machine's flow →
🇨🇦
Find a Canadian Dealer
Buy through a Canadian dealer for warranty support, parts, and service. Avoid grey-market imports on high-ticket attachments.
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