UNBT-950A Mud Pump Parts: Liners, Pistons and Matched Drawing Numbers

For UNBT-950A mud pump parts, the complete model suffix and the liner diameter both matter. The supplied catalogue covers УНБТ-950А and УНБТ-950А2 together, but identifies the 950A pump assembly as 14036.53.975СБ.

A shared catalogue does not make every variant interchangeable. The practical starting point for a fluid-end enquiry is the installed hydraulic block, the liner / piston pair and the associated sealing parts.

Specification and identification points

Order the liner, piston and seals as a matched configuration

The catalogue gives a specific 180 mm example: liner 14036.53.430СБ is paired with piston 14036.53.230СБ, washer 14036.53.246 and hydraulic-seal ring 14036.53.197-04. This illustrates why a bore size and a component name alone do not define the full replacement set.

The -01, -02, -03 and -04 suffixes identify different diameter entries in the table. Do not remove those suffixes or substitute the separately listed 180 mm, 10 MPa piston configuration because its diameter looks similar.

Keep configuration questions separate from catalogue references

The supplied catalogue contains conflicting descriptions of which 950 variant carries a base frame. Confirm the actual mounting arrangement from the nameplate, overall photograph and applicable drawing instead of using that disputed description to order a frame. Pulley and jib-crane options also need configuration checks.

The following is a selected reference table checked against the source pages. It is not the complete pump bill of materials. A pump model or a document number is not a substitute for the component drawing reference.

Retain the original characters in a reference, including the Cyrillic letters СБ where shown. Similar-looking Latin letters or an omitted suffix can make a quotation ambiguous. The references identify entries in these catalogues; they do not prove that a replacement from a different edition will fit.

Information to include in a parts enquiry

• Complete pump designation, manufacturer shown on the nameplate, serial number and year.
• Original drawing or catalogue reference, including every suffix and the figure / position number.
• Part photographs, key mating dimensions and the assembly in which the part is installed.
• For fluid-end consumables: liner bore, piston construction, seal arrangement and required quantity.
• Delivery destination and the list of parts required for the same maintenance job.

For a UNBT-950A enquiry, send the reference together with the pump details for identification. See our mud pump spare parts enquiry page or UNBT series parts catalogue. Availability and suitability require confirmation for the actual configuration.

Document references

• 950: UNBT-950A / UNBT-950A2 parts catalogue, 14036.53.435КДС. Page numbers in the tables identify the PDF file page, counted from 1.

These references describe the supplied documents. They do not establish present inventory, original-manufacturer authorisation or interchangeability with another pump revision.