Shimadzu Shaft-Original Parts Repair for TMP-1303~1503 Molecular Pump

Product overview: This replacement shaft (Option Parts axis 1303) is an original-design repair component for Shimadzu TMP-1303 and TMP-1503 series turbomolecular pumps. It is manufactured to meet the dimensional tolerances, surface finish and dynamic balance requirements necessary for high-speed molecular pump rotors and is intended for use during service and rebuild operations where OEM-equivalent performance and reliability are required.

Key features:

• Direct fit for TMP-1303 and TMP-1503 series—machined to original geometry for correct clearances and alignment with rotor/disc stacks.
• High-strength stainless steel / alloy construction with precision heat treatment to resist fatigue at high RPM.
• Fine surface finish and grinding of journal surfaces for optimized bearing interaction and reduced wear.
• Dynamic balancing and inspection performed before shipment to minimize vibration and extend bearing life.
• Supplied as an OEM-style repair part to restore pump performance while keeping downtime and cost lower than full replacement.

Materials and workmanship: The shaft is produced from high-grade stainless/austenitic or martensitic alloy (material grade selected to match OEM specifications), with controlled hardness and grain structure. Critical journal areas are precision ground and honed; keyways and threaded interfaces are machined to mating tolerances. Each shaft undergoes dimensional inspection and a dynamic balance process to meet allowable runout and vibration limits for TMP rotors.

Compatibility and part application: Compatible with:

• TMP-1303 series
• TMP-1503 series

When rebuilding a pump, verify rotor stack, thrust bearing, and journal bearing condition and replace any worn bearings or seals to ensure long-term reliability.

Installation notes & service tips:

• Perform a full dimensional check of housings and bearings before installing the shaft to confirm no secondary damage exists.
• Use correct installation tooling and jigs to avoid shock or bending loads on the shaft—press fits should be achieved with smooth, coaxial force only.
• Apply recommended lubricants or break-in procedures for the specific bearing type used in the pump (follow pump service manual guidance).
• After assembly, perform static and dynamic alignment checks, then run a controlled spool-up to monitor vibration, temperature and ultimate vacuum performance.

Quality control & testing: Each shaft is visually inspected and measured, then balanced and tested for concentricity and surface finish. For critical repair orders, traceable inspection reports and balancing certificates can be provided on request to document compliance with repair acceptance criteria.

Ordering, packaging & warranty: The shaft is shipped in protective packaging with corrosion inhibitors and supports to prevent damage in transit. Typical lead times depend on stock; enquiries and orders should include pump model (TMP-1303 or TMP-1503), serial number and any known damage to adjoining components. A limited warranty covers manufacturing defects; terms available on request.

Troubleshooting and when to replace the shaft:

• Replace the shaft if you observe excessive runout, scored journals, visible bending, or if dynamic balancing cannot be restored within acceptable limits.
• Common symptoms indicating shaft issues include abnormal vibration at operating speed, elevated bearing temperatures, and reduced ultimate vacuum.
• Always inspect the thrust and journal bearings and the rotor stack for collateral damage when replacing the shaft.

If you need the original-style repair component or assistance with pump rebuild planning, consult the manufacturer repair parts list or contact your service provider. For related components and non-standard maintenance parts for Shimadzu molecular pumps, see Shimadzu molecular pump non-standard maintenance parts for additional options. You may also review rebuild kits and accessory parts at Shimadzu molecular pump non-standard maintenance parts to complete a reliable repair. For further technical details and ordering, check our parts catalog entry: Shimadzu molecular pump non-standard maintenance parts. Replacement planning and service advice are available—see our service page for supported rebuild services: Shimadzu molecular pump non-standard maintenance parts.

Note: For precise dimensional data, part numbers, and OEM cross-references, please supply your pump serial number and rotor condition when requesting a quotation.