JEFW Flanged Guide Bush Bearings – JPBW & JPBF Oilless Bearing Solutions

For reliable bearing solutions, choose JEFW Oilless Guide Bushes. Our JPBW and JPBF Self-Lubricating Bushes deliver maintenance-free performance and exceptional durability, perfect for high-load, low-speed applications.

Experience the superiority of JEFW Flanged Guide Bush Bearings. The JPBW (plain cylindrical) and JPBF (flanged) series offer advanced self-lubricating technology, made from high-strength brass (650#) with solid graphite lubricant. These bearings eliminate the need for oil or grease while maintaining outstanding durability in demanding environments. Opt for JEFW for efficient, long-lasting solutions you can rely on!

JEFW Guide Bearing JPBW,JPBF Oilless Bearing

Technical Specifications & Core Properties

Technical Parameter Specification
Base Material High-strength Brass (650#) + Graphite Composite
Operating Temperature -50°C to +200°C (Max. 300°C intermittent)
Maximum Surface Pressure 100 N/mm²
Sliding Speed Limit 30 m/min
Friction Coefficient ~0.07
Lubrication Method Solid Lubricant Transfer Film (Self-Lubricating)

Key Performance Advantages

1. Self-Lubricating Operation

Solid graphite inserts distributed across the bearing surface create a continuous transfer film during operation, enabling oil-free performance. This eliminates lubrication infrastructure and prevents contamination in sensitive environments such as food processing and cleanroom applications.

2. Exceptional Load Capacity

The high-strength brass (650#) matrix provides superior mechanical strength and hardness, supporting surface pressures up to 100 N/mm² while maintaining dimensional stability under heavy mechanical loads.

3. Maintenance-Free Design

The integrated solid lubricant system operates throughout the bearing service life without replenishment, significantly reducing total cost of ownership (TCO) and downtime in inaccessible or high-volume production equipment.

4. Extreme Environment Resistance

Operational capability spans -50°C to 300°C, with inherent corrosion resistance suitable for chemical processing, metallurgical operations, and outdoor industrial installations.

5. Precision Engineering

Tight tolerance control (H7 bore, m6 OD) ensures consistent press-fit performance and precise shaft guidance critical for mold and die applications, automotive assembly systems, and precision machinery.

Industrial Applications

Industry Sector Typical Applications Recommended Series Key Requirements
Plastic Injection Molding Leader pin bushings, ejector plate guidance JEFW, JPBF Precision alignment & friction reduction
Metal Stamping & Forming Die sets, progressive die components JEFW, JPBW Impact resistance & high durability
Automotive Manufacturing Assembly fixtures, welding jigs, conveyors JPBF, JPBW Heavy-duty cycling & repeatability
Food & Beverage Packaging & filling equipment JPBW Oil-free environments
Sterile processing systems Sterile processing, diagnostic machinery JPBW Contamination-free & corrosion resistance
Renewable Energy Hydroelectric turbine wicket gates JEFW High-load capacity & flanged support

Selection Guidelines

Design Requirement Recommended Solution
Radial Space Constraints JPBW Plain Series—minimizes OD footprint
Axial Positioning Needed JPBF or JEFW Flanged Series—eliminates retaining hardware
High Load / Impact Conditions Select larger OD ratios (D/d ≥ 1.6) for increased load distribution
Long Stroke / High L/D Ratio JEFW Series—multiple standard lengths available (L/d up to 1.4)
Precision Alignment Specify H7 bore tolerance with h7 shaft mating component
Corrosive Environment Specify 650# brass material with graphite; avoid ferrous components

Why Specify JEFW, JPBW & JPBF Bearings?

✓ Total Cost Reduction: Elimination of lubrication systems, reduced maintenance labor, and extended service intervals
✓ Operational Reliability: Consistent friction characteristics and wear performance in continuous-duty cycles
✓ Design Flexibility: Comprehensive size range with both flanged and plain configurations
✓ Sustainability: Zero lubricant consumption and extended replacement cycles reduce environmental impact
Available Configurations: Standard catalog sizes, custom bore/length combinations, and application-specific material formulations available upon request. Technical drawings provided for design integration.
For engineering consultation or to request a detailed specification sheet, contact our technical sales team.

 

JEFW Guide Bearing
unit:mm
Standard No. d L d h7 D m6 D1 T R r1 r1
JEFW-25×40 25 40 25 +0.021
0		 35 +0.025
+0.009		 45 7 10 1 2
JEFW-30×50 30 50 30 40 50 10
JEFW-40×70 40 70 40 +0.025
0		 55 +0.030
+0.011		 65 20
JEFW-50×80 50 80 50 65 75 2
JEFW-60×80 60 80 60 +0.030
0		 75 85
JEFW-65×80 65 80 65 80 90
JEFW-65×120 65 120 65 80 90
JEFW-80×100 80 100 80 100 +0.035
+0.013		 110
JEFW-80×140 80 140 80 100 110
JEFW-100×100 100 100 100 +0.035
0		 120 130
JEFW-100×140 100 140 100 120 130

 

 

JPBW,JPBF Oilless Bearing
unit:mm
Standard No. d d H7 D Tolerance L L1 L2
JPBW
JPBF		 25 25 +0.021
0		 40 ±0.008 40 10 5
30 30 50 50 50
35 35 +0.025
0		 60 ±0.0095 55 15
40 40 60 60 10
50 50 70 75 15 10
60 60 +0.030
0		 80 ±0.011 90 20
80 80 100 120 25
100 100 +0.035
0		 120 150 25
120 120 140 ±0.0125 180 25