Plain & Spherical Plain Bearings · DIN ISO 12240-1 series K / DIN 648 series E
PTFE Composite GE ES-2RS Series Sealed Spherical Plain Bearings
Permissible contact pressure and pv limit, temperature range, lubrication, and the full size range.
PTFE Composite GE ES-2RS Series Sealed Spherical Plain Bearings are made from steel or bronze backing, sintered bronze interlayer, PTFE-based sliding layer; wall thicknesses to the ISO 3547-1 envelope. Corrosion behavior: the sliding layer is chemically inert; the backing decides the rest — steel-backed needs protection, bronze-backed does not. The material is as the backing: steel-backed is magnetic, bronze-backed is not, and the usable service range is about -40 °C to +250 °C for the liner. In practice this material is maintenance-free and designed to run dry: the liner transfers a thin PTFE film onto the shaft, and added grease is not needed and will carry abrasives into the sliding layer.
Material
steel or bronze backing, sintered bronze interlayer, PTFE-based sliding layer; wall thicknesses to the ISO 3547-1 envelope
Corrosion resistance
The sliding layer is chemically inert; the backing decides the rest — steel-backed needs protection, bronze-backed does not
Magnetic response
As the backing: steel-backed is magnetic, bronze-backed is not
Service temperature
about -40 °C to +250 °C for the liner
Property figures are typical for the material. In an assembled bearing the lubricant, the seals and the cage frequently reach their limits before the material does, so check all four against the duty. Material certification is available on request for production orders.
Material specification page for ge es-2rs series sealed spherical plain bearings in PTFE Composite. Covers the grade designation (steel or bronze backing, sintered bronze interlayer, PTFE-based sliding layer; wall thicknesses to the ISO 3547-1 envelope), what the material does inside the bearing, its temperature and environmental limits, the alternatives worth considering, and the sizes available to DIN ISO 12240-1 series K / DIN 648 series E.
Why PTFE Composite for GE ES-2RS Series Sealed Spherical Plain Bearings
Maintenance-free and designed to run dry: the liner transfers a thin PTFE film onto the shaft, and added grease is not needed and will carry abrasives into the sliding layer. In a ge es-2rs series sealed spherical plain bearings it is the sliding surface itself: it carries the load and it is the part that wears.
A thin PTFE-based liner on a metal backing gives a very low coefficient of friction with no lubricant at all, in a wall thickness that fits where nothing else does. It is the standard maintenance-free bushing for a linkage, a hinge or a pivot that must not be greased.
Material Properties
Grade designation
steel or bronze backing, sintered bronze interlayer, PTFE-based sliding layer; wall thicknesses to the ISO 3547-1 envelope
Magnetic response
As the backing: steel-backed is magnetic, bronze-backed is not
Service temperature
About -40 °C to +250 °C for the liner
Corrosion characteristic
The sliding layer is chemically inert; the backing decides the rest — steel-backed needs protection, bronze-backed does not
Service Limits
The liner is thin, so total wear before the backing shows through is measured in tenths of a millimetre — the bearing has a wear life, not a fatigue life, and it is diagnosed by measuring play. It also runs better dry than lubricated: grease is unnecessary, and it holds dust against the sliding surface.
Alternatives and When to Switch
Bronze — solid or sintered — is the alternative where the load is very high, the movement is slow and a lubricant is acceptable. A needle roller bearing is the alternative where friction must be lower still and the section allows it.
Sizes of GE ES-2RS Series Sealed Spherical Plain Bearings Available in PTFE Composite
Designation
Bore d (mm)
Outer diameter D (mm)
Width B (mm)
Inner ring width C (mm)
GE20ES-2RS
20
35
16
12
GE25ES-2RS
25
42
20
16
GE30ES-2RS
30
47
22
18
GE35ES-2RS
35
55
25
20
GE40ES-2RS
40
62
28
22
GE45ES-2RS
45
68
32
25
GE50ES-2RS
50
75
35
28
GE60ES-2RS
60
90
44
36
GE70ES-2RS
70
105
49
40
GE80ES-2RS
80
120
55
45
Other ways to specify the GE ES-2RS Series Sealed Spherical Plain Bearings
The same bearing can also be sized from the shaft on the 60 mm bore and 70 mm bore pages.
Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the designation snaps the other fields to that size's standard values; you can then override any individual value.
Sends the selected values to the quote form below.
Our facility
Held in production, not just on paper
The tolerances above are decided on the grinding and superfinishing lines in our own plant, and gauged on every ring rather than on a sample. A dimension is only worth quoting if it survives the process that produces it.
Request a Quote
The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.
Dimensions & Specifications (DIN ISO 12240-1 series K / DIN 648 series E)
Designation
Bore d (mm)
Outer diameter D (mm)
Width B (mm)
Inner ring width C (mm)
GE20ES-2RS
20
35
16
12
GE25ES-2RS
25
42
20
16
GE30ES-2RS
30
47
22
18
GE35ES-2RS
35
55
25
20
GE40ES-2RS
40
62
28
22
GE45ES-2RS
45
68
32
25
GE50ES-2RS
50
75
35
28
GE60ES-2RS
60
90
44
36
GE70ES-2RS
70
105
49
40
GE80ES-2RS
80
120
55
45
Video: PTFE Composite GE ES-2RS Series Sealed Spherical Plain Bearings
Third-party video, selected automatically for this topic. It is not produced by Bushing Bearings and is not a specification source — use the tables on this page for dimensional data.
Frequently Asked Questions
What corrosion resistance does PTFE Composite give?
Corrosion behavior: the sliding layer is chemically inert; the backing decides the rest — steel-backed needs protection, bronze-backed does not.
Why is PTFE Composite used for this part?
A thin PTFE-based liner on a metal backing gives a very low coefficient of friction with no lubricant at all, in a wall thickness that fits where nothing else does. It is the standard maintenance-free bushing for a linkage, a hinge or a pivot that must not be greased.
What are the limits of PTFE Composite?
The liner is thin, so total wear before the backing shows through is measured in tenths of a millimetre — the bearing has a wear life, not a fatigue life, and it is diagnosed by measuring play. It also runs better dry than lubricated: grease is unnecessary, and it holds dust against the sliding surface.
What should I use instead of PTFE Composite?
Bronze — solid or sintered — is the alternative where the load is very high, the movement is slow and a lubricant is acceptable. A needle roller bearing is the alternative where friction must be lower still and the section allows it.
How do I request a quotation?
Use the technical drawing on this page to pick the exact configuration, then submit it with the quote form. We respond within one business day.
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