I. Product Overview

This type of flanged hollow front cover is precision machined from metal tube stock using CNC technology, with the flange disc and hollow cylinder processed as a whole to form a T-shaped positioning structure. The flat flange surface tightly fits the equipment housing, providing axial positioning and face seal support; the straight-through hollow cylinder allows for the insertion and sliding of shafts and rods, serving multiple functions including guidance, dust prevention, and protection.
Supports processing of materials such as aluminum alloy, stainless steel, brass, etc., the cylinder height, inner and outer bore diameters, and flange dimensions can be non-standard adjusted according to customer drawings and physical samples; both small batch trials and long-term bulk supply can be undertaken, and finished product dimensions and appearance are inspected item by item.

II. Core Highlights of Craftsmanship

1. Pipe CNC integrated molding, high concentricity
   Flange and cylinder are cut and formed in one operation, without secondary welding assembly, featuring excellent coaxiality of inner and outer circles, and smooth sliding of the shaft with minimal binding.
2. Flat flange limiting structure, fits stably
   Large flat flange face, increasing the contact area, easy to assemble without tilting, and accurately limiting the insertion depth of the cylinder.
3. Direct smooth inner bore, guide smooth
   Inner hole precision turned, burr-free inner wall, reducing reciprocating movement friction resistance of the shaft, enhancing the service life of parts.
4. EdgePassivation treatment, assembly without damaging the shell
   All burrs on the flange and cylinder mouth are removed, ensuring the assembly process does not scratch the shell, sealing rings, and other mating parts.

Section 3: Optional Customized Raw Materials

1. 6061 Aluminum Alloy (Mainly Recommended)
   Lightweight, easy to process, high cost-performance ratio, preferred front cover for sensors and lightweight instruments, supports anodized coloring.
2. 304 Stainless Steel
   Corrosion and rust-resistant, suitable for long-term use in damp, humid, and slight corrosion conditions.
3. H62 Brass
   Good wear resistance and lubricity, suitable for conductive or frequent sliding guidance applications.
4. Low-carbon steel pipe
   Obvious cost advantage, general-purpose mechanical components for indoor dry environments.

4. Optional Surface Treatment Processes

• Original Color Precision Machining: General Assembly Parts Solution
• Hard Anodizing: Aluminum Alloy Surface Hardness and Wear Resistance Protection
• Galvanized: Economical rust prevention treatment
• Nickel Plating: Anti-corrosion, exposed accessories for precision instruments
• Mirror polishing: Outer cover of equipment with high appearance requirements

V. Applicable Application Scenarios

✅ Front end protection cover for various sensor housing
✅ Micro-motor,Gear motoroutput end guide sleeve
✅ Precision testing instrument module flange support tube
✅ End face limit and dustproof sleeve for small pneumatic components
✅ Axial protection front cover for automatic small actuator

6. Core Product Advantages

1. Numismatic precision machining, all non-standard modifications for flange size, cylinder height, and bore diameter are supported.
2. Francke limiter +Cylinder body guiding integrated structure, simplifies the number of equipment parts
3. A variety of materials and surface treatments are available, balancing lightweight, anti-rust, and wear-resistant requirements.
4. Through-hole and blind hole styles available for processing, meeting sealed/pierced structure requirements
5. Single piece sample supported, stable delivery time, available for long-term bulk supplySupporting facilities

Section 7: Common Procurement Q&A

Q1: Can it be made with a blind hole front cover that is sealed on one end?
A: Support, both through-hole and bottom-sealed blind hole structures are customizable.
Q2: Is it possible to process a sealing groove on the flange face for a certain degree of sealing?
A: Sure, the flange plane can be equipped with an O-ring groove for a sealed assembly.
Q3: For high-frequency sliding conditions, which material is recommended?
Aluminum alloy hard anodized or brass material, with better wear-resistant and smooth finish.
Q4: Can you provide matching shaft synchronous processing?
A: Support, the front cover bushing is produced together with the matching shaft body to ensure the fit clearance.