HZT023260400 Distance Sleeve (Spacer Sleeve) – 25MBA Marine Vacuum Sewage Pump Core Drive Positioning Component | 316 Stainless Steel Finished Turning | High-Precision Axial Positioning and Sealing Control | Suitable for Vacuum Sanitary Toilet Systems on Ships, Yachts, and Offshore Industries

I. Product Positioning (Function + Assembly Relationship)

The HZT023260400 distance sleeve is a critical component in the transmission system of the HZT25MBA marine vacuum discharge pump. It maintains precise axial spacing between the HZT021265401 rotor and the HZT038281900 shaft seal, ensuring smooth operation of the rotating components under high vacuum conditions and preventing excessive seal compression.

Its core functions include:

* Controlling the distance between the rotor and shaft seal, ensuring stable dynamic and static seal fit;
* Maintaining the axial positioning accuracy of the rotor to prevent operational deviation;
* Improving overall assembly consistency and reducing mechanical wear, vibration, and noise.

The assembly relationship is as follows:
* [Motor] → [Motor Shaft] → HZT023260400 (Spacer Sleeve) → HZT038281900 (Shaft Seal) → HZT029150391 (Shaft Seal Flange) → [Pressure Chamber/Water Outlet Chamber]

II. Materials and Manufacturing Process

* Material: 316 stainless steel solid bar stock;
* Processing: High-precision CNC machining, one-step forming, ensures coaxiality and end face perpendicularity;
* Surface Treatment: Smooth surface finish in natural metal color, no sandblasting or passivation required;
* Dimensional Control: Tolerance range of ±0.01 mm, meeting the high-speed rotation and dynamic balancing requirements of the pump body;
* Fit Type: Slip-fit design, ensuring easy installation, high precision, and repeatable positioning.

III. Structure and Technical Features

1. High-Precision Axial Positioning
The inner and outer diameters are strictly coaxial, ensuring a constant distance between the impeller and the seal chamber as the pump shaft rotates.

2. Corrosion Resistance and High Strength
316 stainless steel offers excellent corrosion resistance, ensuring long-term operation in seawater, blackwater, and chemically contaminated environments.

3. Low-Wear & Long-Life Design
The sleeve’s smooth inner surface reduces shaft wear and extends the life of the entire unit.

4. Standardized Assembly Dimensions
Compatible with the full range of 25MBA components (HZT023219000 / HZT023219100 / HZT029150391), enabling direct replacement and maintenance.

IV. Application Areas (Keywords)

* Marine & Yacht Vacuum Sewage Systems
* Offshore Vacuum Sewage Units
* Port & Harbor Vacuum Discharge Systems
* Land-Based Vacuum Toilet Systems
* Public & RV Vacuum Sanitation Modules

> 🌍 HZT023260400 In various vacuum pump assembly systems,
> It provides precise, stable, and reliable axial positioning and sealing support.
> It is a key component in maintaining vacuum performance and dynamic balance during 25MBA pump assembly.

V. Technical Support and Supply

HZT provides complete equipment, system design, and accessory services:

* Comprehensive solutions for marine vacuum pumps and sewage vacuum pumping stations
* OEM system and shipyard support
* Rapid parts supply and repair service

📧 Technical Support Email: SJDT1199@gmail.com
🌐 Official Website: www.vacuumtoiletparts.com

1. HZT029151001 – Flap Valve Seat
2. HZT037302200 – Flap Valve Disc
3. HZT029151003 – Pressure Plate
4. HZT029150310 – Suction Chamber Cover
5. HZT037219210 – O-Ring
6. HZT029150320 – Suction Chamber
7. HZT020202900 – Hexagon Socket Seal
8. HZT029151900 – Lock nut
9. HZT029150400 – Rotating blade
10. HZT029150500 – Stationary blade
11. HZT029152401 – Half-threaded hexagonal bolt with spring washer (M10x170)
12. HZT029150601 – End flange
13. HZT029150701 – Rotor (impeller)
14. HZT029150800 – Rotor housing
15. HZT029151800 – Spacer
16. HZT038201500 – Shaft seal
17. HZT034507420 – Hose clamp
18. HZT034507500 – Hose
19. HZT029150391 – Shaft Seal Flange
20. HZT029150901 – Pressure Chamber (Water Discharge Chamber)
21. HZT029150310-02 – Suction Cover (Metal Plate)
22. HZT029150450 – Cutter Assembly
23. HZT/- – Motor – 2.2kW – Marine Motor
24. HZT029015001 – 15MBD Vacuum Pump
25. HZT023280061 – Flap Valve Seat
26. HZT037302100 – Flap Valve Disc
27. HZT023280091 – Pressure Plate
28. HZT023280050 – Suction Chamber Cover
29. HZT037219260 – O-ring
30. HZT023280070 – Flange Fastener
31. HZT023280080 – Flange
32. HZT023280040 – Suction Chamber
33. HZT020202900 – Plug
34. HZT020203100 – Rotating Blade
35. HZT020203100 – Stationary Blade
36. HZT021201000 – Blade Holder
37. HZT036202010 – Half-thread Hexagon Bolt (with Spring Washer) M12x220
38. HZT023200210 – Suction Chamber End Plate
39. HZT023219000 – Rotor Housing
40. HZT021265401 – Rotor (Impeller)
41. HZT021217000 – RG 3/8” Plug
42. HZT023219000 – Pressure Chamber (Discharge Chamber)
43. HZT023260400 – Isolation Sleeve
44. HZT038218900 – Shaft Seal
45. HZT023280030 – Shaft Seal Flange
46. HZT023280050-02 – Suction Chamber Cover (Metal Sheet)
47. HZT/- – Motor – 3.0 kW – Marine Motor
48. HZT023280010 – 25 MBA Vacuum Pump

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