+86-0571-88836312 sales@topchoicehz.com

WOUND FIBER GLASS BUSHING 50X55X40

Premium Quality Plastic Bushing

DALON SLEEVE BUSHING

Product Overview

Product Specifications

Manufacturer DALON
Material WOUND FIBER GLASS POLYMER
Type SLEEVE BUSHING
Working Temperature ?/td> From - 196°C to + 19680°C
Product Code WFB-505540-B31
Density (g/cm³) 1.9
HS Code 8483300090
Hardness HRM 95
Static Load (Mpa) 190 Mpa
Max Speed (m/s) 2
Max PV (dry) 2.2

Technical Drawings & Dimensions

plastic bushing electrical Technical Drawing

Product Dimensions

I.D.(d) 50
I.D. (d1)
O.D. (D) 55
O.D. (D1)
Length (L) 40
Flange Dia. (fd)
Flange Thickness (fl)
General Tolerance E10 r7 js13
Weight(ref)/Gram 0.00
Minimum Order Qty 500
All dimensions in millimeters (mm) unless otherwise specified.

Product Characteristics

Standard Engineering Plastic Bushing Material EP Series
Designation Test Method Unit DALON(DOB-EP)
Density ISO 1183 g/cm³ 1.46
Dynamic friction/steel(dry) 0.05~0.20
Max.PV(dry) N/mm²*m/s 0.4
Mechanical capability
Tensile strength 20?/td> ISO527 N/mm² >40
Compressive strength 20?/td> ISO527 N/mm² >75
E-module ISO527 N/mm² >1300
Max.static pressure of the surface 20?/td> N/mm² >70
Charpy notched impact strength 30?/td> ISO179-2 Kj/m² 3
Hardness Rockwell ISO2039-2 HRR 108
Physical and thermal capability
Continuous work temperature ?/td> -40/80
Short-time work temperature ?/td> -70/+120
Thermal conductivity ASTME1461 W/m.k 0.2
Linear coef.Of thermal expansion ASTMD696 K-1.10-5 10
Moisture absorption RH50/23?/td> ASTMD570 % 0.2
Electrically conductivity capability
Volume resistivity IEC60093 Ω.cm >1012
Surface resistivity IEC60093 Ω >1015
Flammability UL94 HB
Color Dark Grey
DALON Filament Wound Plastic Bushing Material Series
Designation Unit B-32 B-31 B-21 B-06 B-03 B-01
Basic type Higher Load Higher Load High Load Standard General Economic
Static load Mpa 485 465 240 240 240 150
Dynamic load Mpa 210 190 160 150 100 30
Density g/cm³ 1.9 1.9 1.9 1.9 1.9 1.9
Max.speed M/s 0.5 0.5 0.2 0.2 0.2 0.1
Max.PV Mpa*m/s 2.5 2.2 2 2 1.8 1.6
Coefficient of friction - 0.03-0.12 0.03-0.12 0.03-0.12 0.03-0.12 0.03-0.12 0.15-0.25
Working temp. °C ±196 ±196 ±180 ±180 ±150 ±150
Short-time work temp. °C -269~+269 -269~+269 -196~230 -196~+230 -196~+196 -196~+160
Radial compressive strength Mpa 550 520 500 500 500 200
Hardness HRM 95 95 95 95 95 85
25-150°C Linear thermal expansion factor Um/m°C 13×10-6 13×10-6 13×10-6 13×10-6 13×10-6 13×10-6
Color - Black Black Black Black Black Black

Product Description

Wound Fiberglass Bushing – Electrical Plastic Insulation 50×55×40

WOUND FIBER GLASS BUSHING 50X55X40 Additional image 1

DALON’s WOUND FIBER GLASS BUSHING 50×55×40 is a high-performance insulating component specifically designed for electrical plastic bushing applications. Crafted from thermoset resin-impregnated fiberglass yarn and precision wound into a cylindrical sleeve, this bushing delivers excellent dielectric strength, dimensional stability, and thermal resistance in high-voltage or thermal-cycling environments.

With an inner diameter of 50 mm, outer diameter of 55 mm, and a length of 40 mm, it is tailored for tight-fitting applications where both electrical insulation and structural support are critical. The continuous glass fiber construction resists cracking, creep, and fatigue under mechanical or thermal stress, making it ideal for housing, spacing, or guiding conductive elements.

Unlike injection-molded plastic bushings, the wound fiberglass construction allows controlled fiber alignment, resulting in enhanced mechanical strength and resistance to delamination. Its non-conductive and flame-retardant properties also ensure reliable performance in power distribution systems, transformers, switchgear, and electrical motor housings.


Key Features

  • Material: Wound fiberglass with thermosetting resin

  • Dimensions: ID 50 mm × OD 55 mm × Length 40 mm

  • Electrical Insulation: Excellent dielectric performance

  • Thermal Range: Operates from -40°C to +180°C continuously

  • Flame Resistance: UL-compliant non-conductive resin system

  • Mechanical Strength: Resistant to cracking, vibration, and deformation

  • Customizable: Available in various wall thicknesses and lengths


Applications

  • Electrical insulation in power electronics and switchgear

  • Motor and transformer shaft sleeves

  • High-voltage equipment bushings and guides

  • Industrial control panel spacer sleeves

  • Structural insulation in battery modules and EV systems


Why Choose DALON

DALON is a trusted manufacturer of precision-engineered plastic bushings and wound fiberglass components, serving global OEMs in electrical, energy, and industrial sectors. With ISO 9001:2015 certification and decades of experience in composite material processing, we offer both standard and customized solutions to meet your design and functional requirements.

We offer:

  • Full customization of inner diameter, wall thickness, and length

  • Rapid development for prototype and production parts

  • 35–40 day lead time for new tooling; 30 days for existing molds

  • Technical support for insulation, mechanical loading, and installation

  • Low-MOQ options and engineering consultation

 


FAQ – Frequently Asked Questions

Q1: What is a wound fiberglass bushing used for in electrical systems?

It insulates and supports conductive parts in high-voltage or thermally sensitive assemblies, preventing short circuits and maintaining structural alignment.

Q2: How does this bushing compare to molded plastic bushings?

Wound fiberglass bushings offer better mechanical strength, temperature resistance, and dimensional precision compared to injection-molded plastics.

Q3: Is this material suitable for outdoor or harsh environments?

Yes. The fiberglass and resin system provides excellent UV, moisture, and chemical resistance.

Q4: Can the size be customized for different shaft or housing fits?

Absolutely. We can customize ID, OD, and length according to your engineering drawings or application needs.

Q5: What is the lead time for custom bushings?

For existing tooling, the lead time is around 30 days. For new tooling and custom designs, expect 35–40 days including mold development.

Q6: What industries use fiberglass plastic bushings?

Used widely in energy systems, electric vehicles, power electronics, automation control, and industrial switching devices.


What Do People Also Ask – Answered

Q: What material is best for electrical insulation bushings?

Fiberglass with thermoset resin is ideal due to its high dielectric strength, mechanical integrity, and resistance to heat and flame.

Q: Can fiberglass bushings handle high voltages?

Yes. Wound fiberglass bushings are designed to withstand high dielectric stress in switchgear, transformers, and high-voltage systems.

Q: Are fiberglass bushings resistant to vibration and thermal shock?

They are highly stable under mechanical and thermal cycling, making them reliable in dynamic and high-stress environments.

Additional image 2
Plastic bushing for electrical use – wound fiberglass 50×55×40, offers high insulation, heat resistance, and dimensional precision for high-voltage systems.

Applications & Industries

Engineering Plastic Bushing Applications

DALON Plastic Bushing Applications

The versatility of WOUND FIBER GLASS BUSHING 50X55X40 makes them ideal for numerous applications, including:

Key Industries

  • Automotive Industry - Enhancing performance in vehicle components
  • Office Automation (OA) - Improving machinery efficiency
  • Agricultural Machinery - Providing durability in harsh environments
  • Textile Industry - Cost-effective replacement for metal bearings

Technical Specifications

PV Value

  • ?Maximum dry condition PV: 0.4N/mm*m/s
  • ?Optimal for low load & speed rotation
  • ?1-3x speed increase with lubrication

Load Capacity

  • ?Continuous operating temperature: 80°C
  • ?Average surface pressure: 40N/mm

Temperature Range

  • ?Short-term max (2 hours): 120°C
  • ?Optimal wear performance: 50°C

General Applications

Automotive Industry:
- Used in steering columns, pedal assemblies, door hinges, and suspension systems where durability and noise reduction are crucial.
Aerospace and Defense:
- Applied in control systems, actuators, and landing gear assemblies, where high strength-to-weight ratio and corrosion resistance are essential.
Industrial Machinery:
- Ideal for use in conveyors, assembly lines, and heavy-load equipment, offering low maintenance and high performance in dirty or abrasive environments.
Agricultural Equipment:
- Used in tractors, harvesters, and irrigation systems, where exposure to dust, soil, and chemicals demands robust and durable bearings.

Additional Applications

Marine Applications:
- Suitable for rudder assemblies, winches, and pulley systems, benefiting from corrosion resistance in salty and humid environments.
Energy Sector:
- Applied in wind turbines and solar panel tracking systems, where they withstand variable loads and harsh weather conditions.
Food and Beverage Industry:
- Utilized in processing and packaging machinery, where non-toxic, clean, and maintenance-free components are required.
Medical Devices:
- Used in medical equipment and devices, where precision, cleanliness, and reliability are paramount.

Why Choose WOUND FIBER GLASS BUSHING 50X55X40?

WOUND FIBER GLASS BUSHING 50X55X40 are designed for environments where traditional lubrication is impractical or impossible. They offer outstanding performance, durability, and cost savings, making them the preferred choice for various industries. Experience the reliability and efficiency of WOUND FIBER GLASS BUSHING 50X55X40, tailored to meet the demands of your specific applications.

Product Inquiry

Product Inquiry

Related Products

Why Choose DALON

Inquiry Today

Our professional team is ready to assist with your inquiry for this Wound Fiberglass Bushing – Electrical Plastic Insulation 50×55×40.

Contact Us

Certified Quality

All our products are manufactured according to ISO 9001 standards.

View Certificates

Custom Solutions

We offer free design services and custom manufacturing for your specific needs.

Fast Delivery

We provide worldwide shipping for all our products with reliable delivery times.