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In the engineering pursuit of maximizing equipment uptime and eliminating unscheduled downtime, traditional steel-on-steel bearings often fail prematurely due to irregular relubrication or grease starvation.
Our GE4E Series Maintenance-Free Spherical Plain Bearings solve this industrial pain point by incorporating an advanced, solid-lubricant PTFE composite sliding liner. Engineered for micro-oscillating linkages, this self-lubricating series completely eliminates manual maintenance, reduces friction coefficients, and extends service life in high-load, low-velocity applications.
Outer ring with single split in axial direction. Both outer and inner rings are made of carbon chromium steel, hardened and phosphorization treatment, sliding surface treated with Mos2.
Technical Specifications
Bearing Number
Dimensions (mm)
Load Ratings (kN)
Weight ≈ kg
d
D
B
C
dk
rs min
r1s min
α ˚ ≈
Dynamic
Static
GEG4E
4
14
7
4
10
0.3
0.3
20
3.4
17
0.005
GEG5E
5
16
9
5
13
0.3
0.3
21
5.5
27
0.009
GEG6E
6
16
9
5
13
0.3
0.3
21
5.5
27
0.008
GEG8E
8
19
11
6
16
0.3
0.3
21
8.1
40
0.014
GEG10E
10
22
12
7
18
0.3
0.3
18
10
53
0.021
GEG12E
12
26
15
9
22
0.3
0.3
18
16
84
0.036
GEG15ES
15
30
16
10
25
0.3
0.3
16
21
106
0.048
GEG17ES
17
35
20
12
29
0.3
0.3
19
30
146
0.080
GEG20ES
20
42
25
16
35.5
0.3
0.6
17
48
240
0.152
GEG25ES
25
47
28
18
40.7
0.6
0.6
17
62
310
0.199
GEG30ES
30
55
32
20
47
0.6
1
17
79
399
0.296
GEG35ES
35
62
35
22
53
0.6
1
16
99
495
0.402
GEG40ES
40
68
40
25
60
0.6
1
17
127
637
0.535
GEG45ES
45
75
43
28
66
0.6
1
15
156
780
0.698
GEG50ES
50
90
56
36
80
0.6
1
17
245
1220
1.42
GEG60ES
60
105
63
40
92
1
1
17
313
1560
2.09
GEG70ES
70
120
70
45
105
1
1
16
400
2000
3.01
GEG80ES
80
130
75
50
115
1
1
14
488
2440
3.61
GEG90ES
90
150
85
55
130
1
1
15
607
3030
5.50
GEG100ES
100
160
85
55
140
1
1
14
654
3270
6.04
GEG110ES
110
180
100
70
160
1
1
12
950
4750
9.74
GEG120ES
120
210
115
70
180
1
1
16
1070
5350
15.1
GEG140ES
140
230
130
80
200
1
1
16
1360
6800
18.9
GEG160ES
160
260
135
80
225
1.1
1.1
16
1530
7650
24.8
GEG180ES
180
290
155
100
250
1.1
1.1
14
2120
10600
35.9
GEG200ES
200
320
165
100
275
1.1
1.1
15
2320
11600
44.9
GEG220ES
220
340
175
100
300
1.1
1.1
16
2550
12700
50.9
GEG240ES
240
370
190
110
325
1.1
1.1
15
3030
15190
65.3
GEG260ES
260
400
205
120
350
1.1
1.1
15
3570
17850
82.0
GEG280ES
280
430
210
120
375
1.1
1.1
15
3800
19100
96.6
Key Applications
Industrial Robotics & Micro-Actuators
In multi-axis robotic end-effectors, parallel kinematics for delta 3D printers, and automated linkage systems, weight and space optimization are critical. The GE4E series features a narrow profile and zero-backlash potential, delivering fluid, oil-free trajectory control without adding dead weight to high-speed dynamic assemblies.
Precision Medical Devices & Food Processing Machinery
Sanitation and contamination control are absolute prerequisites in food-grade and pharmaceutical manufacturing.
The Solution: Standard greased bearings suffer from lubricant migration and purging, which leads to batch contamination.
The Application: Installed in pharmaceutical filling linkages and food sorting conveyor pivots, our solid-film PTFE liner operates entirely dry, eliminating the risk of oil leakage.
Pneumatic & Hydraulic Cylinder Rod Ends
When fluid power cylinders actuate heavy, offset loads, structural deflection and misalignment introduce severe lateral forces (side loads) to the piston rod.
The Application: Integrated into the rear clevis or rod end eyes of the cylinder.
The Engineering Value: Utilizing its 16° tilting capability, the bearing perfectly absorbs angular misalignment, preventing uneven wear on the cylinder's internal seals and rod gland.
Technical FAQ (Frequently Asked Questions)
Q1: How does the load capacity of this PTFE-lined GE4E compare to a standard steel-on-steel GE4E?
A: Under static conditions, both versions share similar limits based on the yield strength of the steel rings. However, under dynamic conditions (continuous oscillation), the self-lubricating PTFE composite version can sustain higher specific surface pressures at low velocities. While steel-on-steel bearings rely on a hydrodynamic oil film that breaks down during slow micro-oscillations (leading to metal-on-metal galling), the solid PTFE liner provides constant, uniform separation between the sliding surfaces.
Q2: What are the shaft and housing bore fitting tolerances recommended for installing GE4E bearings?
A: Because the micro-sized GE4E has a relatively thin outer ring, incorrect housing interference fits can distort the spherical geometry, altering the internal clearance. We strictly recommend the following ISO standard fits:
Shaft Selection: h6 or g6 (for smooth sliding and easy mounting) Housing Bore (Steel/Cast Iron): M7 or K7 (to ensure proper seating without excessive radial compression) Housing Bore (Light Alloy/Aluminum): N7 to compensate for higher thermal expansion rates
Q3: Can this maintenance-free bearing operate under submerged or wet conditions?
A:Yes, but with specific considerations. The PTFE sliding liner itself is chemically inert and unaffected by water. However, if moisture enters the bearing, it can cause the underlying carbon chromium steel rings to rust, creating an abrasive surface that will tear the liner. For washdown or outdoor marine environments, we strongly advise specifying our Stainless Steel (316/440C) + PTFE customized variant, or utilizing external radial seals to isolate the joint from liquids.
Q4: What is the expected operating temperature range for the GE4E self-lubricating series?
A: The standard operating temperature envelops a broad range from -30°C to +130°C. The critical limiting factor is the thermal stability of the adhesive bonding agent that secures the PTFE composite liner to the outer ring. For specialized high-temperature applications (up to +200°C), please contact our engineering team to upgrade to a high-temp synthetic resin matrix or mechanical locking liner configuration.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
1996
Total Annual:
30000000-50000000
Employee Number:
150~200
Ecer Certification：
Verified Supplier
Founded in 1996, Shanghai YongXing Bearing Manufacturing Co., Ltd. (SYX) has evolved from a leading manufacturer into a certified innovator at the forefront of precision motion technology. We specialize in engineering and producing high-performance spherical plain bearings, rod ends, and cam followe... Founded in 1996, Shanghai YongXing Bearing Manufacturing Co., Ltd. (SYX) has evolved from a leading manufacturer into a certified innovator at the forefront of precision motion technology. We specialize in engineering and producing high-performance spherical plain bearings, rod ends, and cam followe...
