Machined Replacement Parts for Hydraulic Breakers

Pistons, front heads, cylinders, back heads, tool bushings and wear parts, machined to fit the major breaker brands. Independent manufacturer, private label available.

A machine shop, not a parts trader

The parts on this page are made on the same turning, boring, honing, grinding and heat-treatment route as our hydraulic cylinder work. A breaker piston is a hardened, ground, close-tolerance cylindrical part, and so is a cylinder rod. That is the honest reason the two lines sit on one site.

We supply independent breaker parts specialists, attachment dealers, rental fleets and repair shops, and we manufacture under our customers’ own labels where that is preferred. We do not claim to be an authorised OEM channel, because we are not one.

※Drawing or sample based ※Private label ※Hardness and case depth recorded per batch ※Material certificates on request

Send a Sample or Drawing

Hydraulic breaker front and back heads manufactured by ORISE MACHINERY — Precision machined hydraulic breaker front head and back head (nitrogen chamber housing) by ORISE MACHINERY.

SCOPE

What we make, what we source, what we do not touch

Being explicit about this is a commercial advantage. A buyer who has been burned by a supplier that quoted everything and subcontracted half of it will recognise the difference.

PART CATEGORY	SUPPLY ROUTE
Chisel / Moil Point / Blunt Tool / Flat Chisel / Conical Tool / Pyramid Tool	Machined in house
Piston	Machined in house
Front Head / Back Head	Machined in house
Cylinder	Machined in house
Through Bolt / Side Bolt / Tie Rod	Qualified partner process
Tool Bushing – Upper / Lower / Thrust Ring	Machined in house
Seal Kit	Bought-in component
Diaphragm / Membrane / Accumulator / Charging Valve / Control Valve	Bought-in component
Wear Plate / Retainer Pin / Tool Pin	Machined in house
Spring Pin / Top Buffer / Elastic Pad / Shock Absorber	Bought-in component

♦Machined in house means the part is cut, heat treated where required and finished on our own equipment, with our own inspection records.

♦Qualified partner process covers operations we do not own. Through bolts must be thread rolled rather than single-point turned, because rolled threads have materially better fatigue life and through-bolt fracture is one of the classic breaker failure modes. Where we do not own the rolling machine, we say so.

♦Bought-in component covers elastomer and hydraulic items: seal kits, diaphragms, accumulators and valves. We can consolidate them into a shipment, but we will not present them as our manufacture.

♦Stated plainly. Each route on this page is labelled machined in house, qualified partner process or bought-in component, so you can plan your own verification rather than take the category on trust

Category names follow the terminology used in European and North American aftermarket catalogues, so that they match the words dealers actually search with.

PART GROUPS

Browse by part

Find Parts by Model *

Search published breaker data by brand, model and tool diameter, then send us the part you need. Tool diameter is the key that drives bushing bore, blank size and pin geometry.

Open the cross reference

Tool Bushings

Upper, lower and thrust bushings sized from the published tool diameter of the model.

Specification

Breaker Pistons

Hardened and ground breaker pistons, produced from a drawing, a sample or a scan of a worn part.
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Specification

Through Bolts & Side Bolts

Tie rods and side bolts in alloy steel, thread
rolled, with the tensile class stated.
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Specification

Front Heads & Cylinders

Heavy machined bodies: front heads, cylinders and back heads,bored and honed to the piston fit.
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Specification

Chisels Moil Points

Moil points, chisels, blunt and conical tools
through a forging partner, with the hardness profile stated.

Specification

MATERIALS

Material and heat treatment

Published industry reference values, shown for benchmarking. Our own values are stated per part number on the quotation and recorded on the batch certificate.

PART	GRADE	HARDNESS	NOTE
Chisel / piston	42CrMo4	Surface 58-62 HRC	Induction or surface hardened, case 4-8 mm
Chisel, alternative practice	40CrMo / 42CrMo	Surface 51±3 HRC, core 35±3 HRC	Dual-hardness design, intended to resist brittle fracture
Through / side bolt	SCM435 / 42CrMo	Class 12.9	Thread rolled, not turned

Send a worn part, a drawing or a model number

For breaker parts a photograph with a scale rule and the model designation is often enough to start. We will confirm dimensions before quoting.

Request a Quotation