Shimadzu Option Parts Radial Unit (2) Assy 1003 for TMP-803 1503 Series Molecular Pumps

• Provides the radial electromagnetic bearing elements (Magnet Bearing 2) that generate controlled magnetic forces to center the rotor radially during operation.
• Integrates the radial position sensors (Radial Sensor 2) that detect rotor displacement and supply the feedback signal to the active magnetic bearing controller.
• Packaged as an OEM original repair assembly for direct replacement in TMP-803 and 1503 series units, ensuring correct fit, alignment, and electrical interfaces.

This assembly is specifically matched for Shimadzu TMP-803 and 1503 series molecular pumps. When servicing these models, technicians should use the Radial Unit(2) Assy 1003 to maintain manufacturer-specified dynamic behavior and clearance tolerances.

• Guaranteed dimensional and electromagnetic compatibility with the TMP-803/1503 rotors and housings.
• Pre-validated sensor alignment and factory-calibrated mechanical interfaces reduce rework time during replacement.
• Improved long-term reliability and repeatable rotor balance behavior compared with non‑OEM substitutes.

• Only qualified service personnel should replace the radial unit assembly. Follow Shimadzu service instructions and safety procedures to avoid damage to the magnetic bearing electronics and rotor.
• Before disassembly, record rotor orientation and bearing controller settings. Use a clean, ESD-safe work area to prevent contamination and sensor damage.
• Inspect mating surfaces and connector pins for wear or corrosion. Replace any damaged fasteners or harnesses and reapply thread-lock or sealing compounds per OEM guidance.
• After mechanical installation, perform electrical connection checks and run the magnetic bearing controller’s auto-centering and sensor self-test sequences to verify correct operation.

• Sensor cable integrity and connector seating
• Magnet surface condition (no heavy pitting or debris)
• Mounting bore for correct concentricity and absence of burrs
• Clearance and axial position of the rotor per service manual tolerances

Order as: Radial Unit(2) Assy 1003 (Shimadzu Option Parts) for TMP-803 / 1503 series. When placing replacement part orders, confirm the pump model and serial number to ensure correct revision and any required subcomponents are included.

• Store the assembly in a clean, dry environment at room temperature. Avoid magnetic interference from strong external fields during storage.
• Handle with care to prevent shocks to sensor elements. Use anti-static protection when handling electronic connectors.

• If the controller reports a radial sensor fault after replacement, recheck connector seating, wiring continuity, and sensor alignment.
• Intermittent vibration or loss of levitation may indicate misalignment, contaminated magnet surfaces, or a failing sensor — inspect and clean components before replacing other modules.
• Always run the pump through a controlled start-up and monitor bearing controller currents and sensor outputs to confirm stable operation.

Using the genuine Shimadzu Radial Unit(2) Assy 1003 reduces downtime and the risk of repeat failures because the assembly is manufactured and tested to match the design characteristics of the TMP-803 / 1503 magnetic bearing system. For related original repair components and maintenance parts, see our selection of Shimadzu option parts: Shimadzu molecular pump option parts.

Our technical team can also help you source compatible assemblies and provide practical guidance for installation and testing. Browse additional repair components and service items here: Shimadzu molecular pump option parts, or consult our product catalog for complementary parts such as thrust bearings, rotor assemblies, and sensor harnesses: Shimadzu molecular pump option parts.

For maintenance kits and full-service options for TMP-803 / 1503, check the OEM parts and service listings: Shimadzu molecular pump option parts.

If you need detailed drawings, compatibility confirmation, or on-site service recommendations for installing the Radial Unit(2) Assy 1003, contact our support team with your pump model and serial number. We can provide pre- and post-sale technical assistance to ensure the assembly integrates seamlessly with your TMP-803 / 1503 molecular pump.