NSH32-10 Tandem Hydraulic Gear Pump With Two Sections

NSH32-10 tandem gear pump with two hydraulic sections

NSH32-10 combines a 32 cm³/rev front section and a 10 cm³/rev rear section on a common drive. The two pump sections provide separate hydraulic flows for equipment requiring two circuits. Olive Branch Hydraulics supports China-manufactured gear pump enquiries for Russian and CIS machinery applications, with configuration approval before production or supply.

This tandem construction differs physically from the single-section NSH pumps. It has two connected pump housings and separate oil connections for the two sections. The photographs show a supplier-labelled NSH32-10M-3 sample, with НШ-32/10 visible on the rear cover. Photos illustrate that sample configuration; the approved supply drawing determines the exact shaft, flange, connections and overall length.

Model names and enquiry references

Do not interpret 32-10 as a pressure rating or one 42 cm³/rev outlet. Each section supplies its own circuit. Other combinations, including 10-10, 14-10 and 32-32, require their own technical review and are not the photographed model.

Rotation and installation interfaces

Confirm drive rotation viewed from the shaft end. A left-hand configuration and a right-hand configuration must be specified individually; do not reverse an assembled pump merely to change rotation. Provide a photograph of the original rotation arrow and full marking because shortened catalogue names may omit the rotation suffix.

Front flange pilot, bolt-hole spacing and mounting-face dimensions.

Drive shaft spline profile, diameter and projection.

Each section’s inlet and outlet connection dimensions and position.

Overall installed length, clearance and coupling arrangement.

The longer tandem assembly can require different pipe routing and clearance from an existing single pump. A shared drive must transmit the combined torque required by both sections. The permissible operating speed is constrained by the complete assembly and both section specifications. A single-section pump rating alone does not approve the tandem installation.

Section flow and operating requirements

Nominal displacement identifies oil volume per shaft revolution. Theoretical flow is calculated separately for each section by multiplying displacement by rotational speed and dividing by 1,000 to obtain litres per minute. Actual delivered flow also depends on pressure, oil viscosity and volumetric efficiency. The two outlet flows should be reviewed against the respective circuit demands.

Submit continuous and intermittent pressure requirements for both circuits, minimum and maximum drive speeds, oil specification and expected temperature conditions. Pressure limits, speed limits and seal selection must be confirmed in the data sheet for the quoted pump. No generic single-pump rating should be treated as a guaranteed tandem performance figure.

Configuration and order review

Send the original pump marking, machine details and clear photographs of every connection.

Confirm front and rear section displacement, rotation and mechanical interfaces.

Approve the configuration drawing and required inspection documentation.

Agree quantity, sample requirements, marking, packaging and quotation terms.

Frequently asked questions

Is this the same as an NSH32 single pump?

No. It has a second 10 cm³/rev pump section, additional oil connections and a longer assembly.

What does 32-10 mean?

It identifies nominal section displacements of 32 and 10 cm³/rev, rather than one combined outlet displacement.

Can the two outlets operate at different pressures?

The circuits can have different demands, subject to the approved section ratings and combined drive-torque limits.

Does the model name establish rotation?

No. Confirm the complete marking and rotation arrow, viewed from the shaft end.

Are all tandem combinations shown in these photographs?

No. These are reference views of the supplier-labelled 32-10 sample only.

How are price and lead time confirmed?

They are confirmed in the quotation after reviewing configuration, quantity, sample requirements and delivery destination.

Request an NSH32-10 configuration quotation

Send Olive Branch Hydraulics the full pump code, rotation, section requirements, interface measurements and order quantity for configuration review and quotation.