Hydraulic breaker for Cat 303.5 CR

Depending on equipment, the Cat 303.5 CR weighs 3.48–4.19 t and fits well into the Promove XP200 class. Typical jobs: concrete slabs, old foundations, asphalt.

The key point is oil flow. Cat states 70 l/min for the primary auxiliary circuit and notes that maximum flow and pressure are not reached at the same time. The XP200 is designed for 40–60 l/min, so the circuit must be limited. Whether that is done via the setting in the monitor or with a flow control valve on your machine, we clarify in the fit check before payment.

Machine data according to Cat Specalog 303.5 CR (AEHQ8351-04). Equipment and year of build can differ.

Promove XP200 hydraulic breaker: data, price, delivery

• Carrier 2.5–5.2 t (optimal 3–4.5 t)
• Oil flow 40–60 l/min
• Operating pressure 100–110 bar
• Relief valve on the excavator: 160 bar
• Max. return back pressure 25 bar
• Weight 230 kg
• Chisel Ø 64 mm
• Bolted top plate 330 × 330 mm

Price on request – we send a written quote to verified business customers. Same-day reply · usually within 2 hours · 7 days a week (weekends included).
Freight is quoted per order: delivery DAP to your business address, with freight always shown as a separate line in your written quote, so the total (products + freight) is always clear. Prices ex VAT.

• Fit check before payment: machine data and VAT number are checked first; then SEPA proforma or card payment.
• Included: breaker with bolted top plate, hydraulic hoses and a moil point. Quick coupler, adapter plate and adapters are not included. For the XP200 and XP300, the only documented mount is skid steer (SAE J2513); any other coupler or mount is to be confirmed with the manufacturer before we quote.
• CE marked – manufacturer's EU Declaration of Conformity supplied with the machine on delivery
• 12-month warranty from the date of delivery, claims handled through Thunderline. Wear parts (chisels, points, hoses) and damage from misuse, incorrect installation or operation outside the datasheet limits are not covered. Full terms on request.
• Delivery DAP to your address in the EU. Delivery to your business address; unloading by the customer (forklift). A tail lift is not included by default – available on request at an extra charge, quoted per order. The delivery window is confirmed in writing per order.
• For Promove attachments: all EU countries except Estonia and Italy.

B2B only, reverse charge: companies with a valid EU VAT number in the country of delivery only (VIES check). No VAT is charged by Thunderline OÜ – VAT is accounted for by you in your country of delivery (reverse charge, Art. 141 and 197 Directive 2006/112/EC).

View the Promove XP200

Frequently asked questions

Can I simply connect the XP200 to the 303.5 CR?

Not without adjustment. According to Cat the primary auxiliary circuit delivers up to 70 l/min, while the XP200 takes 40–60 l/min. Too much oil overloads the breaker. Limit the flow and set the relief valve to 160 bar.

How do I find out whether my 303.5 can adjust its flow?

It depends on year of build and equipment. Send us the serial number or year. We check before payment, and your Cat dealer can make the setting.

Which chisel is included?

A moil point (conical, Ø 64 mm) is included. Other chisel shapes are available on request.

Do you deliver to Belgium or the Netherlands?

Yes. For Promove attachments: all EU countries except Estonia and Italy. Delivery is DAP to your address by freight carrier, with freight as a separate line.

Request a fit check

Send us model, operating weight, quick coupler and auxiliary hydraulics (l/min, bar) of your Cat 303.5 CR. We reply with fit and a written quote in EUR, with freight as a separate line.

Request a fitment check Request a quote
E-mail: hello@thunderline.eu

Cat and the model names mentioned are trademarks of their respective owners and are used only to describe fitment. Thunderline OÜ is not affiliated with these manufacturers.