NSH16D-16D-4 Tandem Hydraulic Gear Pump With 16+16 Cc Sections

NSH16D-16D-4 Tandem Hydraulic Gear Pump

Olive Branch Hydraulics supports China-manufactured NSH16D-16D tandem gear-pump enquiries for Russian and CIS hydraulic equipment. The nominal combination is 16 + 16 cm³/rev. Two pump sections share a mechanical drive and provide flow for two hydraulic circuits. Send the full old-pump marking and installation measurements to confirm the exact execution before quotation.

Equal Displacement in Two Compact Sections

The supplier reference sample has two similar-size aluminium housing sections with a visible central joint, a four-hole front mounting flange and machined oil-port faces on both sections. The shaft-end view shows the splined drive connection and locating face. The rear angled view shows the complete assembly and its four rear-cover bolts.

This 16+16 combination differs from NSH16-10, which has unequal nominal section displacements. It also differs from NSH10-10 and NSH32-32 assemblies. Similar flange shapes or a common NSH designation do not establish the same displacement, installed length, coupling or mounting dimensions. Select the complete assembly using its own drawing.

Model Names and Russian Markings

Enquiry references include NSH16D-16D, NSH16D-16D-4, NSh16-16, NSH16/16, НШ16Д-16Д and НШ-16Д-16Д-4. For the left-rotation version, keep the Latin L or Cyrillic Л from the original marking. The photographed supplier listing identifies a left-rotation D-series assembly; the shortened 16/16 form is only a search reference.

Do not assume that M-series combinations, a different pressure execution or an unsuffixed NSH16-16 pump are interchangeable with this reference. Compare the complete shaft, flange, oil-port arrangement and approved operating specification. A machine parts-book number and a clear photograph of the old marking help avoid ordering a similar-looking configuration.

Rotation and Installation Checks

Specify rotation viewed from the drive-shaft end. Left rotation means counterclockwise under that viewing convention. The assembled pump must not be assumed reversible. Obtain written confirmation of the supplied rotation and the actual inlet and outlet arrangement for both circuits.

Measure the locating diameter, mounting-bolt centres, flange thickness, shaft diameter, spline profile and usable shaft length. Record all oil-port connection dimensions and the available installation space. Review the coupling and combined drive torque for both sections. Equal nominal displacement does not establish equal circuit pressure or permission to combine the outlets without reviewing the hydraulic system.

Operating Specification and Reference Images

Provide the required working pressure, peak pressure, speed range, oil viscosity and temperature conditions for each circuit. Allowable pressure, shaft loads, support requirements and service limits follow the approved data sheet of the quoted assembly. Supplier catalogue values are not an Olive Branch production test result or a guarantee for every configuration bearing a similar short name.

The three images are supplier reference photographs, not photographs of an Olive Branch production batch. They show the oil-port side, mounting face and shaft end, and rear assembly. Confirm final supply origin, configuration and sample photographs with the quotation. OEM/ODM and sample review can be discussed using the installation details, quantity and destination.

Frequently Asked Questions

What does 16-16 identify?

It is a nominal 16+16 cm³/rev two-section combination. Confirm each section on the supplied specification.

Is this the same as NSH16-10?

No. The second section has a different nominal displacement and the complete assembly requires a separate installation check.

What does the D letter mean in an enquiry?

It preserves the Cyrillic Д execution identifier. Keep the full code and do not replace it with an M-series designation without reviewing the specification.

Which rotation does the reference listing identify?

Left rotation, counterclockwise viewed from the drive-shaft end. Confirm the direction in the order specification.

Can I order only by a tractor name?

Provide the machine reference, old-pump marking and measured interfaces. A tractor name alone does not prove compatibility.

What is needed for a quotation?

Send all-side photos, the complete marking, shaft and mounting measurements, oil-port dimensions, operating conditions and quantity.