Also known as
17SF28TT
B28LSS
GE44ZO-2RS
GEZ112ES-2RS
CategorySpherical Plain Bearing
Weight and Dimensions
Inner (d) MM
44,45
Outer (D) MM
71,44
Width (B) MM
38,89
Inner (d) Inch
1.75
Outer (D) Inch
2.8125
Width (B) Inch
1.5312
Weight (kg)
0.649
Product Properties
Seal
2RS - Rubber Seal on Two Sides
Contact Material
Steel on Steel
Suffix description
ESSliding Contact Surface Steel/Steel, Split Outer Ring With Lubrication Holes
2RSLip Seals On Both Sides
Product description
The SBB28ES-2RS NSR is a spherical plain bearing. Spherical plain bearings are two-piece plain bearings. They have no rolling elements, but consist of an inner and outer ring. The inner ring has a convex outer surface. The outer ring has a concave inner surface. This construction gives spherical plain bearings their high load carrying capacity and capacity to accommodate misalignment.
The SBB28ES-2RS NSR has a steel-on-steel sliding contact. Both the outer and inner rings of this bearing are made of steel. Bearings with steel-on-steel sliding contacts are wear-resistant and have a high load carrying capacity. This bearing type requires regular maintenance. Proper lubrication is required to reduce friction and prevent fouling and corrosion.
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