Web Menu

Product Search

Language

Share

Home / Product / JDB Solid-lubricating Bearing / JGBF Brass Oilless Ejector Flanged Guide Bearings Bushings
Wholesale JGBF Brass Oilless Ejector Flanged Guide Bearings Bushings
JGBF Brass Oilless Ejector Flanged Guide Bearings Bushings
  • JGBF Brass Oilless Ejector Flanged Guide Bearings Bushings

JGBF Brass Oilless Ejector Flanged Guide Bearings Bushings

Product Description:

JGBF Brass Oilless Ejector Flanged Guide Bearings Bushings Brass is used as the base material and graphite solid lubricant is embedded in it, which has self-lubricating properties. The bearings have a low friction coefficient (0.05-0.12) and can operate stably under high load and high temperature environments without external lubrication. They have strong wear resistance and long service life. JGBF bearings are corrosion-resistant and suitable for a variety of harsh working conditions. Applications include machinery manufacturing, automobiles, construction, port machinery, agriculture, medical treatment and wind energy, and are widely used in equipment that requires high precision, high load capacity and maintenance-free operation. There are a variety of standard sizes to adapt to a variety of mechanical equipment.

Contact Us
PREV：High Temperature Brass JGB Oilless Ejector Guide Bearings
NEXT：Maintenance-Free With Collar Brass Din9834 Oilless Guide Bushing Bearing
Flanged Ejector Guide Series

JGBF Brass Oilless Ejector Flanged Guide Bearings Bushings

300
°C
Operating Temperature
Flanged
Configuration
Integral Retention
0.18
μ
Friction at 250°C
Flanged Guide Architecture

The JGBF series combines high temperature brass substrate with an integral flange designed specifically for ejector guide applications. The flange provides positive axial location within the mold or die platen, eliminating the need for separate retaining rings or shoulder bolts. This configuration simplifies installation and ensures consistent guide positioning during thermal cycling. Graphite lubricant inserts are distributed across both the cylindrical guide bore and the flange thrust face, providing lubrication for both radial guidance and axial seating contact. The flanged design also facilitates easier removal during maintenance through access from the flange side.

Flange Diameter 1.5x OD standard
Flange Thickness 2.5mm - 5.0mm
Guide Tolerance ISO H8 at 20°C
F
Flange Retention Integral flange eliminates separate hardware, reduces assembly steps
T
Thermal Stability Special brass alloy maintains dimensional accuracy to 300°C
G
Dual Surface Lubrication Graphite on bore and flange face for combined motion lubrication
E
Ejector Pin Guidance Designed specifically for ejector pin stroke and load requirements

Flanged Design Specifications

Flange Face Flatness 0.015mm per 50mm diameter Perpendicular to bore axis
Flange OD Tolerance ISO h11 Standard clearance fit
Flange Corner Radius R1.0mm maximum Prevents stress concentration
Flange Graphite Pattern Radial insert arrangement 8 inserts on flange face

Flanged Guide Applications

  • Injection molding ejector plates with guided pins
  • Die casting ejector systems requiring axial retention
  • Hot stamping tool ejector mechanisms
  • Thermoforming mold ejector guides
  • Compression molding press ejectors
  • Automated transfer die ejector systems

Flange Integration Benefits

  • Self-aligning flange face with counterbore seat
  • Eliminates separate thrust washer components
  • Reduces assembly time by 40% compared to non-flanged
  • Provides visual confirmation of full seating during installation
  • Allows removal using pry tool without damaging housing

Flanged Configuration Comparison

Feature JGBF Flanged Standard Sleeve With Retaining Ring
Axial Retention Method Integral flange Interference fit only Separate ring
Assembly Components 1 1 2
Disassembly Access Flange side Press out from rear Ring removal required
Axial Load Capacity 45 N/mm² 25 N/mm² 35 N/mm²
Thermal Expansion Matching Optimized for steel Standard Ring dependent

Flanged Guide Size Matrix

Guide ID mm OD mm Flange OD mm Length L mm Flange Thick mm Max Pin Speed m/s
6 10 16 12, 16, 20 2.0 0.6
8 12 20 16, 20, 25 2.5 0.6
10 16 26 20, 25, 30 2.5 0.55
12 18 30 25, 30, 40 3.0 0.5
16 24 38 30, 40, 50 3.0 0.45
20 30 48 40, 50, 60 3.5 0.4
25 36 56 50, 60, 80 4.0 0.35
32 44 68 60, 80, 100 4.0 0.35
40 54 82 80, 100, 120 4.5 0.3
50 66 100 100, 120, 150 5.0 0.3
Flange thickness and diameter can be customized for specific mold platen counterbore dimensions.
Installation Sequence
1 Clean counterbore shoulder and bore. Verify depth matches flange thickness.
2 Chamfer counterbore entry at 1.5mm x 15 degrees to prevent flange edge damage.
3 Apply thin lubricant to housing bore only. Do not apply to guide bore.
4 Press using flat tool contacting flange face uniformly. Press until flange seats.
5 Verify flange flushness with housing surface. Tolerance ±0.05mm.
Frequently Asked Questions
Can the flange face handle thrust loads Yes. Flange face supports axial loads up to 45 N/mm². Graphite inserts on flange provide lubrication during axial contact.
What is the recommended counterbore depth Counterbore depth should equal flange thickness plus 0.05mm clearance for thermal expansion at operating temperature.
How to remove a JGBF bearing Use a pry tool between flange edge and housing. Do not pry against the guide bore or graphite inserts.
Flange eccentricity tolerance Flange OD concentricity to guide ID maintained within 0.05mm TIR for standard production.
Flange Surface Finish Ra 0.8 µm
Bore Surface Finish Ra 0.4 µm
Material Grade CuSn8 High Temp
Graphite Coverage 22% bore / 18% flange

Standard No. d L d  G6 D  m6 D1 T L1
JGBF-12×19 12  19  12  +0.016
+0.006		 18  +0.018
+0.007		 25  4  19 
JGBF-12×24 24
29		 24 
JGBF-12×29 29 
JGBF-12×34 34  34 
JGBF-16×19 16  19  16  25  +0.025
+0.009		 30  6  19 
JGBF-16×24 24  24 
JGBF-16×29 29  29 
JGBF-16×34 34  30 
JGBF-16×39 39
49		 30 
JGBF-16×49 30 
JGBF-20×24 20  24  20  +0.020
+0.007		 30  35  8  24 
JGBF-20×29 29  29 
JGBF-20×34 34  34 
JGBF-20×39 39  39 
JGBF-20×49 49 40 
JGBF-20×59 59 40 
JGBF-25×24 25  24 25  35  +0.025
+0.009		 40  24 
JGBF-25×29 29 29 
JGBF-25X34 34 34 
JGBF-25X39 39  39 
JGBF-25×49 49  49 
JGBF-25×59 59 50 
JGBF-25×69 69 50 
JGBF-30×29 30  29 30  42 47  10  29 
JGBF-30×34 34 34 
JGBF-30×39 39  39 
JGBF-30×49 49  49 
JGBF-30×59 59  59 
JGBF-30×69 69  60 
JGBF-30×79 79  60 
JGBF-35×39 35  39  35





 +0.025
+0.009		 48 +0.025
+0.009		 54  10 39 
JGBF-35×49 49  49 
JGBF-35×59 59  59 
JGBF-35×69 69  69 
JGBF-35×79 79  70 
JGBF-35×89 89  70 
JGBF-35×99 99  70 
JGBF-40×39 40 39  40 55 +0.030
+0.011		 61 39 
JGBF-40×49 49  49 
JGBF-40×59 59  59 
JGBF-40×69 69  69 
JGBF-40×79 79  79 
JGBF-40×89 89  80 
JGBF-40×99 99  80 
JGBF-40×109 109  80 
JGBF-50×49 50 49  50 70 76 12 49 
JGBF-50×59 59  59 
JGBF-50×69 69  69 
JGBF-50×79 79  79 
JGBF-50×89 89  89 
JGBF-50×99 99  90 
JGBF-50×109 109  90 
JGBF-50×119 119  90 
JGBF-60×99 60 99  60  +0.029
+0.010		 80  86  15  99 
JGBF-60×109 109  109 
JGBF-60×119 119 110 
JGBF-60×129 129  110 
JGBF-60×149 149  110 
Our Product //
Related Product
Zhejiang Shuangnuo Bearing Technology Co., Ltd.
Zhejiang Shuangnuo Bearing Technology Co., Ltd.
Zhejiang Shuangnuo Bearing Technology Co., Ltd. is China JGBF Brass Oilless Ejector Flanged Guide Bearings Bushings Suppliers and Wholesale JGBF Brass Oilless Ejector Flanged Guide Bearings Bushings Company, we are a manufacturer specializing in producing various self-lubricating copper alloy products using centrifugal casting, continuous casting, metal mold casting, and other processes. Its main products include brass, aluminum bronze, tin bronze, and others produced according to national standard grades. It processes and produces various solid inlaid self-lubricating bearing products on this basis . At the same time, it uses sintering technology to produce bimetallic products and many other types of products. Since its establishment nearly 10 years ago, the company has focused on the research development, and production of various new self-lubricating bearings.

In the process of product production, our company has always insisted on independent casting production of raw materials to ensure the quality of products from the source; during the casting process, the whole process is monitored, and the finished product is tested by spectrometer three times before, in and after the furnace to confirm the material composition of the product. The national testing agency is regularly commissioned to test the material composition and mechanical properties of the product, and authoritative test reports can be provided to customers in need; the company implements integrated production from material to finished product processing and has more than 80 sets of advanced CNC machine tools, CNC lathes, machining centers, and other major equipment. The strong production capacity ensures that the material production is organized for customers for the first time, shortening the production cycle.
  • 0+
    Establishment

    Founded in 2014, Shuangnuo has 10 years of experience in the industry.

  • 0+
    Advanced Equipment

    Strong production capacity ensures that we can organize material production for customers as soon as possible and shorten the production cycle.

  • 0+
    Happy Clients

    There are more than 5,000 cooperative customers around the world.

Our News //
News & Insights.
VIEW MORE
Our Honor //
Honor.
VIEW MORE