The Caproni group 1 gear pump is a European built external gear pump on the standard 4 bolt DIN mount with a 1:8 tapered shaft. It is the direct interchange for any group 1 European pump on that mount, and it is the value line against the Italian Vivoil pump - same frame standard, same mounting, same shaft, keener price. Fourteen displacements from 1.0 to 9.8 cm3 per revolution, in BSPP threaded or square flanged porting.

Pick your options below and the exact factory part number appears on screen. Every choice in the dropdowns is a real catalogued part number with a firm price - nothing here is a guess.

Applications

• 12V and 24V DC power packs
• Small tipping bodies and tailgate lifters
• Replacement pumps on European built compact machinery
• Oil circulation and cooling circuits
• Small tool and clamping circuits

Ways to buy this gear pump

• Off the shelf: every combination in the dropdowns below is a real part number we can order today
• Seal kits and shaft seals: full reseal kits for this frame are on the seal kit listing linked further down - starting part number GR105-SK
• Tandem and multiple pumps, port adaptors and non standard shafts: all available from the factory. Call 1300 146 737 or use the enquiry form and we will code and price it
• Identifying an old pump? These part numbers have been sold in Australia under the Boden or GRH names as well - the codes are the same. Send us a photo of the body and we will confirm it

Pick your pump

Standard Supply Configuration

• Bare pump - no fittings, adaptors, couplings or bell housing fitted
• Mounting flange and drive shaft exactly as selected in the dropdowns above
• Port sizes per the performance table for your displacement
• Nitrile (NBR) seals as standard - viton is a factory option
• Standard blank rear cover unless a relief cover has been quoted separately
• Rotation as stated in the title - a gear pump cannot be reversed in the field

How to Order - Part Number Breakdown

Every part number on this listing decodes the same way. Worked example:

10C 4.2 X053G

Change the C to an A and the factory builds the pump anti-clockwise - 10C1X053G becomes 10A1X053G. Anti-clockwise group 1 pumps are not a stocked line, so that is a call-us item with a lead time.

Specifications

General Performance Data

Published factory figures. Maximum continuous pressure and speed both fall as displacement rises - always read the row for the exact part number you are buying.

4 Bolt DIN Mount - 1:8 Tapered Shaft - BSPP Ports

4 Bolt DIN Mount - 1:8 Tapered Shaft - Flanged Ports

How to choose

• Work out the flow you need first. Litres per minute = displacement in cc x rpm divided by 1000, then take off 5 to 10 percent for slip. A 1,450 rpm electric motor on a 16.8cc pump gives roughly 23 L/min.
• Then check the pressure. Continuous pressure falls as displacement rises on every gear pump frame. Read the performance table for the exact displacement you are choosing, not the headline figure.
• Match the mount and shaft to the machine. 4 bolt DIN with a 1:8 taper is the European standard. SAE 2 bolt with a keyed or splined shaft is the American standard and is what most Australian bell housings, gearboxes and couplings expect.
• Confirm rotation from the shaft end. Gear pumps cannot be reversed in the field. Look at the shaft coming towards you and note which way it turns.
• Check the power available. kW = flow in L/min x pressure in bar divided by 600, then divide by about 0.85 for efficiency. There is no point specifying a pump the engine or motor cannot turn.
• Not sure? Call 1300 146 737 with your drive speed, the flow you want, the pressure and a photo of the old pump. We do this every day.

Official Datasheets

Full factory technical data for the whole Caproni gear pump range - dimensions, performance tables, shaft and flange drawings, order code charts and seal kit references.

Technicians Advice

• Flange or thread - check before you order. The X053G build has threaded BSPP ports. The X026 build has square flanged ports that need a bolt-on adaptor. They are the same pump otherwise, and getting the wrong one costs you a day.
• 1:8 taper, clean and dry. No grease, no anti-seize, and torque the nut. A greasy taper works loose and destroys itself and the shaft with it.
• Relief valve is mandatory. Fixed displacement, no internal protection. And set it for the displacement you actually bought - the small pumps take 250 bar but the 9.8cc is only rated to 120 bar continuous.
• Suction, again. Full bore, short, no elbow on the port. Group 1 pumps are small enough that one bad fitting on the inlet will cavitate them.
• Rotation is cast in. These are clockwise pumps viewed from the shaft end. Anti-clockwise is a factory build, not a field change.

Warranty and Service

12-month warranty on every pump. If you are identifying an existing pump, photograph every number cast or stamped on the body and the shaft end and send it through with your enquiry - gear pump part numbers are long and one letter changes the shaft or the rotation.

Complete your setup

Want the pump to protect its own circuit? A rear cover with an integrated relief valve is available for this frame in three pressure bands - no separate relief valve or manifold needed.

Seal kits, the other frame sizes in this range, the same group from our other brand, and the gear motor that shares this frame:

Fitting out a fleet or buying several? Call us and we will work out freight and lead time on the whole lot.

Shipping and Freight Information

We ship Australia-wide. Orders are dispatched from our supply network in Melbourne, Brisbane and Perth, so your parts leave from the warehouse closest to you on express freight. Because we sell solid steel components, freight costs reflect real weight and real distance. We do not hide freight costs in inflated product prices. What you see is what you pay.

• Standard parcels: 2 to 7 business days
• Heavy freight: 3 to 8 business days
• Orders placed before 12 Midday AEST ship same business day where stock is available

Why Buy From Us

• 20+ years of hydraulics expertise
• Australian owned and operated, Gold Coast QLD
• ABN 92 969 264 674
• Secure checkout: Visa, Mastercard, PayPal, Zip Pay, Direct Deposit
• Tax invoices supplied with every purchase
• Phone 07 5563 1982 or 1300 1 HOSES
• Email sales@mhfgc.com.au

Out of Stock Policy

It is our intention to maintain active stock on every listed item at all times. On rare occasions a size may be temporarily unavailable. If this occurs you will be notified immediately and offered the choice of a full refund or a short wait for incoming stock, typically 3 to 14 days.

Need help choosing? Call 1300 146 737 or email sales@mhfgc.com.au — real technicians, real answers.