Self-Lubricating Brass Mold Sleeves | Graphite Inlaid Precision Copper Bushings

Product Overview

Non-standard brass precision sleeves and bushings are customized mould components designed for guidance, wear resistance, and low-friction movement in plastic injection moulds. These copper-based sleeves are manufactured according to customer drawings and are commonly used in guide systems, sliding mechanisms, and copper-inlaid structures where dimensional stability and service life are critical.

Key Features & Technical Advantages

• Manufactured from brass or copper alloy materials

• Non-standard design, fully customized / Built-to-Print

• Good self-lubricating performance and wear resistance

• Stable dimensional accuracy for sliding and guiding functions

• Suitable for copper-inlaid or composite mould structures

• Smooth surface finish to reduce friction and galling

• Compatible with high-cycle plastic injection moulds

Applications & Industry Use

These precision brass sleeves and bushings are widely applied in:

• Plastic injection mould guide systems

• Sliding core and moving plate assemblies

• Multi-cavity packaging moulds

• Bottle cap and closure moulds

• Medical plastic moulds requiring stable movement accuracy

They are typically used in mould areas with repeated linear motion or contact surfaces.

Mould Structure & Design Description

In plastic injection moulds, brass sleeves and bushings are commonly installed as:

• Guide sleeves for ejector systems

• Wear sleeves for sliding cores or lifters

• Copper-inlaid guide components to protect steel structures

• Replaceable wear parts for long-term mould maintenance

All components are produced strictly according to customer drawings, including outer diameter, inner bore, length, tolerance, and installation method.

Manufacturing Capability & CNC Machining

Senlan Precision specializes in precision mould components manufacturing.
Our facility is equipped with advanced CNC machining centers from MAKINO (Japan) and HARDINGE (USA), enabling:

• Precision CNC turning and milling

• Tight tolerance control for inner and outer diameters

• Consistent surface finish for sliding applications

• Stable quality for customized and repeat orders

Each part is processed under controlled machining and inspection procedures.

Custom Manufacturing & OEM Process

We provide full OEM and customized manufacturing services, including:

• Built-to-Print production based on customer drawings

• Material selection support for brass and copper alloys

• Prototype, small-batch, and volume production

• Engineering review before production approval

All orders follow confirmed technical specifications to ensure direct compatibility with existing mould assemblies.

Quality Control & Export Experience

With extensive experience supplying precision mould parts to international customers, Senlan Precision applies structured quality control processes:

• Incoming material inspection

• In-process dimensional checks

• Bore diameter and concentricity inspection

• Final inspection prior to export packaging

Inspection reports and dimensional records can be provided upon request.

Related Mould Components

• Guide pins and guide bushings

• Sliding core sleeves and wear sleeves

• Copper-inlaid mould components

• Customized ejector and mould spare parts

All related products are available on a custom manufacturing basis.

Technical FAQ

Q1: Are these brass sleeves available in standard sizes?
No. All sleeves and bushings are manufactured as non-standard parts based on customer drawings.

Q2: Can copper-inlaid structures be supported?
Yes. Brass and copper-inlaid designs are supported according to mould structure requirements.

Q3: What tolerances can be achieved?
Tolerances are controlled according to drawing requirements and application needs.

Q4: Are small quantity or trial orders accepted?
Yes. Prototype and small-batch orders are supported before volume production.

Request a Quotation

For pricing, lead time, or technical consultation regarding non-standard brass precision mould sleeves and bushings for plastic injection moulds, please submit your drawings or specifications.
Our engineering team will review your requirements and provide a detailed quotation.