NSH100/50A-3 Large-Displacement Tandem Gear Pump

NSH100/50A-3 Large-Displacement Tandem Gear Pump

Olive Branch Hydraulics supports China-manufactured gear-pump enquiries for Russian and CIS mobile-equipment markets. This page covers the NSH100/50A-3 tandem reference, with a nominal 100 + 50 cm³/rev displacement combination. Please send the complete existing pump marking and installation details so that the supplied configuration can be reviewed before quotation.

Two Pump Sections in One Assembly

The tandem arrangement combines a larger front pump section with a smaller rear section. It is a different assembly from a single NSH100A pump and from the smaller NSH32-10 tandem family. Verify the actual inlet and outlet arrangement for both sections; do not select the pump from overall appearance or combined displacement alone. Installation space, drive torque, coupling and oil-line connections must suit the complete assembly.

Model Names and Russian Search References

Enquiries may use NSH100-50, NSh100/50A-3, HW-100 50A-3, НШ100-50А-3, НШ100А-50А-3 or НШ100/50А-3. These are catalogue and search references, not an unconditional interchangeability statement. Preserve all suffixes and the rotation marking. A different pressure execution, shaft or mounting interface requires a separate configuration review. Left- and right-rotation configurations should not be assumed reversible in service.

Photographs and Installation Reference

The photographs are supplier-labelled NSH100-50 family references. Their exact markings are not readable, and they are not independently verified photographs of an Olive Branch manufacturing batch. The catalogue drawing illustrates an ANTEY groups 4+3 arrangement with a 100 + 50 displacement option; it is an engineering comparison reference, not a supply-approved drawing. Confirm the dimensions against the drawing supplied with your quotation. The photographs come from separate sources and should not be interpreted as multiple views of the same physical sample.

Information Needed for an Accurate Quotation

Provide front, rear and oil-port photographs, the full model marking, machine model and parts-book reference where available. Include flange bolt spacing, locating diameter, shaft spline count and dimensions, port dimensions, rotation viewed from the shaft end, required speed and the operating pressure of each section. State the oil type, temperature range and duty cycle. Machine names alone do not establish fitment.

Pressure, speed, efficiency, weight and overall dimensions depend on the approved configuration. We do not transfer another manufacturer's catalogue ratings into an Olive Branch performance guarantee. Contact Olive Branch Hydraulics to discuss OEM/ODM supply, sample review and production requirements.

Frequently Asked Questions

What does 100/50 refer to?

It identifies the nominal displacement combination used for this tandem enquiry: 100 and 50 cm³/rev. Confirm both sections on the final specification.

Is this the same pump as NSH32-10?

No. The displacement combination and assembly size differ. Mounting and drive compatibility require separate checking.

Are all the listed model spellings interchangeable?

No. They help identify an enquiry. Complete suffixes, shaft, flange, oil ports, pressure execution and rotation must match the approved configuration.

Can rotation be chosen?

Send the required direction as viewed from the shaft end and the old pump marking. Availability must be confirmed for the quoted assembly.

Are the images actual Olive Branch production photos?

They are supplier reference photographs and a catalogue comparison drawing. Request confirmation photographs and the approved installation drawing for your order.

Which pressure and speed should I use?

Use the performance sheet for the exact supplied configuration, including limits for each section and the complete drive assembly. Do not infer a rating from a short model name.