RA SERIESSILENCED HYDRAULIC BREAKERS

Breakers and thumbs in stock when your machine needs them

Silenced RA Series breakers for 10,000 to 350,000 lb excavators and pin-on hydraulic thumbs for 8 to 50 ton machines. Parts on the shelf in South Carolina and Texas.

Shop Breakers & Thumbs Request a Quote

Designed in the USA
CE-marked
Parts in stock in SC and TX
Quote in one business day

In stock and ready to ship

Every breaker ships with a CAT-spec top bracket and hydraulic hoses. Custom brackets for other makes on request.

IN STOCKCAT 320 class

RA220 Silenced Hydraulic Breaker

Silenced hydraulic breaker for CAT 320 class excavators.

Carrier: 44,100–52,900 lb (20 ton)
4,210 lb · 32–48 gpm · 350–500 bpm · 5.51 in tool

Starting at $12,500.00

Check fit

IN STOCKCAT 336 class

RA330 Silenced Hydraulic Breaker

Silenced hydraulic breaker for CAT 336 class excavators.

Carrier: 72,800–83,800 lb (35 ton)
6,942 lb · 53–69 gpm · 150–300 bpm · 6.50 in tool

Starting at $14,800.00

Check fit

IN STOCKExcavator attachment

Pin-On Hydraulic Thumbs

Progressive-link and standard hydraulic thumbs for 8 to 50 ton machines.

Carrier: 8 to 50 ton
400-grade steel · 2 to 4 tines · Cylinder with relief valve

Starting at $8,200.00

Check fit

View all attachments

Find your breaker

Tell us your excavator. We confirm the fit before anything ships.

Model	Excavator weight (lb)	Typical CAT carrier	Availability
RA055	9,900–13,200	305	Special order
RA075	13,200–18,700	307–308	Special order
RA090	15,400–24,300	309–310	Special order
RA120	22,000–30,900	311–313	Special order
RA160	30,900–39,700	314–316	Special order
RA200	39,700–48,500	318	Special order
RA220	44,100–52,900 lb (20 ton)	CAT 320 class	In stock
RA250	52,900–59,500	323–326	Special order
RA300	59,500–72,800	326–330	Special order
RA330	72,800–83,800 lb (35 ton)	CAT 336 class	In stock
RA450–RA1300	88,200–352,700	340–6015	Special order

CAT carriers are approximate. Confirm carrier weight, hydraulic flow and pressure with RAM before ordering.

Why contractors and dealers choose RAM

Real inventory

Breakers and thumbs stocked in Charleston, SC and Dallas-Fort Worth, TX. Not a catalog of things that ship in eight weeks.

Parts on the shelf

Wear parts and major components in stock at both warehouses, from seal kits to pistons and chisels.

Built for the hard hits

Wear-resistant NM400-class steel where it matters and premium NOK hydraulic seals. Designed in the USA.

A warranty in writing

12 months on RA Series breakers. Published, clear, and handled by people who answer email.

25+Years on your side of the counter

We built the supplier we never had.

Before RAM Attachments, we spent more than 25 years running equipment rental businesses and selling used heavy equipment. We didn't learn this industry from an office. We lived it every day.

When a machine is sitting idle waiting on an attachment, it isn't an inconvenience. It's money lost every hour. Yet suppliers are still sold out for weeks and raising prices overnight with no explanation.

So we built RAM: real inventory of what the market actually needs, not just what's easy to build.

Parts & tools

Wear parts and major components in stock at both our South Carolina and Texas warehouses.

Seal kits
Piston
Front and back head
Control valve
Accumulator
Bushings
Through and side bolts
Nitrogen charging kit

Tools: moil point, flat chisel and blunt, standard or custom length and hardness.

Order parts

Warranty

RA Series breakers	12 months
Thumb structure	12 months
Thumb cylinder	6 months
Wear parts	Not covered

Claims: warranty@ramattachments.com, before any repair.

Warranty support

Ship it or pick it up.

Charleston, SC

Headquarters and warehouse. Pickup available.

Dallas–Fort Worth, TX

Warehouse support and pickup availability.

Anywhere else

Freight is quoted with your order based on the destination.

Questions we hear every day.

Do you stock replacement parts?

Yes. Contact our team with your breaker or attachment model and the part you need.

Will it fit my machine?

We confirm carrier weight, connection, hydraulic flow and application before an order is finalized.

How fast will I get a quote?

Our team responds to complete quote requests within one business day.

Dealer network

Sell RAM attachments.

Dealer pricing, product support and special-order assistance are available through the Dealer Portal.

Become a dealer Dealer portal