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The Interpump Gearbox for PTO Drive is a 1:1.9 speed multiplier that takes 540 rpm tractor PTO input and delivers 1000 rpm output to IP 47, IP 59 and IP 66 series Interpump plunger pumps. Maximum input power is 7 kW (9.5 Hp). The input shaft is a 1-3/8" 6-spline male PTO shaft machined to ASAE S203.13 / DIN 9611-1. This is the standard drive interface used on agricultural sprayers, orchard sprayers, pressure washers and mobile washing equipment that pair a tractor PTO with a high-pressure Interpump pump.
Raydafon supplies the Interpump Gearbox for PTO Drive as an ISO 9001 certified factory in Ningbo, China. OEM replacement is supported when the original unit's shaft, flange and mounting pattern are provided. The gearbox is used as a direct drop-in replacement for the original Interpump drive, with no modification to the pump or the tractor PTO linkage.
An Interpump Gearbox for PTO Drive is a mechanical speed increaser that sits between a tractor's 540 rpm PTO output and an Interpump high-pressure plunger pump that is designed to run at 1000 rpm. The gearbox uses a 1:1.9 gear ratio to convert the input speed upward: 540 rpm × 1.9 = approximately 1000 rpm at the pump input shaft. Without this multiplier, a 540 rpm PTO cannot drive a pump that is rated for 1000 rpm — the pump would lose its rated flow and pressure, and the plunger seals would not build the required pressure curve.
The Interpump Gearbox for PTO Drive is a compact cast-iron unit with a male 1-3/8" 6-spline input shaft and a pump-side output flange machined to match the pump crankcase mounting face. Because the gearbox bolts directly between the PTO shaft and the pump, the complete drive train — tractor PTO → gearbox → pump — operates as one assembly without the need for a belt or chain intermediate.
The Interpump Gearbox for PTO Drive is designed for the 1000 rpm version of the Interpump IP series plunger pump line. The three supported model families are listed below. The gearbox bolts to the crankcase mounting face of the pump and matches the pump's input shaft keyway. If you are unsure whether your pump is the 1000 rpm version or the 1450 rpm version, check the pump nameplate: 1000 rpm pumps are the ones that require this multiplier; 1450 rpm pumps run directly from a 540 rpm PTO through a 1:2.7 or a 1:2.8 multiplier instead and are not compatible with this unit.
The table below lists the complete specification of the Interpump Gearbox for PTO Drive. All values are confirmed against the original Interpump drive specification. For OEM replacement orders, Raydafon matches the output flange bolt pattern, the output shaft keyway and the overall envelope to the original unit before shipping.
Raydafon manufactures the full range of agricultural gearboxes used on tractor-driven implements. The Interpump Gearbox for PTO Drive is one of more than 40 standard models; the list below shows the other common types produced at the same factory. Custom housing, shaft and ratio configurations are available when the standard model does not fit the implement.
Standard Agricultural Gearbox Models
The Interpump Gearbox for PTO Drive is produced from the material set below. Where the original unit or the implement manufacturer requires a different material, an alternative can be specified at the quotation stage.
Raydafon holds ISO 9001 quality management system certification and maintains an in-house inspection process that covers incoming material, gear cutting, heat treatment, assembly and final test. The Interpump Gearbox for PTO Drive is inspected against the original specification before shipment, with backlash and contact pattern checks recorded on the unit's data sheet.
The Interpump Gearbox for PTO Drive is used to multiply 540 rpm tractor PTO input up to 1000 rpm, which is the rated input speed for Interpump IP 47, IP 59 and IP 66 series plunger pumps. It is used on agricultural sprayers, orchard sprayers, mobile pressure washers and any implement that pairs a tractor PTO with a high-pressure Interpump pump.
Check the pump nameplate. If the rated speed on the nameplate is 1000 rpm, this is the correct gearbox. If the rated speed is 1450 rpm, the pump uses a 1:2.7 or 1:2.8 multiplier instead and this gearbox is not compatible. When in doubt, send the pump model number and Raydafon will confirm before issuing a quotation.
Yes. Send the original gearbox model number, nameplate photo or a dimensioned drawing. Raydafon will confirm whether the output flange bolt pattern, output shaft keyway and overall envelope match. Where the original unit is obsolete, a functionally equivalent Interpump Gearbox for PTO Drive can be produced against the same mounting and shaft configuration.
The Interpump Gearbox for PTO Drive is rated for 7 kW (9.5 Hp) maximum input power at 540 rpm input and 1000 rpm output. This covers the pump power range of the supported IP 47, IP 59 and IP 66 1000 rpm pumps. If the pump requirement exceeds 7 kW, contact Raydafon to confirm the correct gearbox model.
Standard configurations ship in 30 to 45 days. Custom or low-volume configurations are confirmed with the quotation. As an OEM manufacturer, Raydafon can supply from single units up to full production quantities. MOQ depends on the specific configuration and is confirmed when the specification is fixed.
For standard products, the standard payment term is 30% T/T in advance with the balance before shipment. Other payment terms can be discussed for repeat orders or project quantities.
Yes. Raydafon can supply a sample unit free of charge, with freight paid by the buyer. Sample terms are confirmed at the quotation stage against the specific configuration being requested.
Every Interpump Gearbox for PTO Drive ships with an outline drawing, installation and maintenance manual, a running test report and a lubrication recommendation. Material certificates and third-party inspection reports are available on request.
Send the pump model number (IP 47 / IP 59 / IP 66), the original gearbox model or a dimensioned drawing, the shaft configuration required, and the quantity. Raydafon's engineering team will confirm the specification and lead time within one working day.
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