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Bearings
Bearings
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Housings/housing Units
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Linear Technology
Linear Technology
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Seals
SKF
Deep Groove Ball Bearings SKF 6210 -Z
- Technical data
- Inner diameter
- 50 mm
- Outer diameter
- 90 mm
- Width
- 20 mm
- Material
- Standard bearing steel
- Ball rows
- Single row bearing
- Seal
- Cover on one side
- Cage
- Sheet steel cage
- Clearance
- Normal radial clearance
- Running accuracy
- Tolerance class P0/PN2 / ABEC 1
- Current insulation
- No current insulation
- Bore
- Cylindrical bore
- Outer ring
- Without flange/groove
- Material of rolling elements
- Standard bearing steel
- Temperature range
- -20 to +150 °C
- Weight
- 0,451 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 25 | 5% | 28,27 € |
| 35 | 10% | 26,79 € |
Deep Groove Ball Bearings SKF 6210 -Z
The SKF 6210-Z deep groove ball bearing, with dimensions of 50x90x20 mm and a single-sided cover, offers reliable protection in compact installations.
The SKF 6210-Z deep groove ball bearing is a single-row rolling bearing for industrial applications with predominantly radial loads. With a bore of 50 mm, an outside diameter of 90 mm and a width of 20 mm, this design can also accommodate moderate axial loads in both directions. Manufactured from standard roller bearing steel 100Cr6, the design features a guided sheet steel cage and standard radial clearance for versatile mechanical drive solutions.
For which operating conditions is the 6210-Z deep groove ball bearing with cover plate suitable?
This rolling bearing is suitable for rotating shafts subjected to predominantly radial forces, where one side of the bearing housing needs to be protected against the ingress of dirt. The single-sided sheet metal cover shields the rolling elements from coarse particles, whilst the open opposite side allows for continuous lubricant exchange via the machine housing. Design engineers prefer to use this variant in enclosed installation spaces with a defined lubricant supply to support reliable relubrication.
What function does the Z-cover plate fulfil in this bearing?
The non-contacting Z-cover plate, made of sheet steel, covers the bearing on one end face. Compared to abrasive rubber seals, this metal cover does not generate any additional friction, making the ball bearing suitable for speeds similar to those of open bearings. The permissible temperature range is from –20 to +150 degrees Celsius. Before installation, check the alignment of the open side with the lubrication point, as well as the fits between the shaft and the housing bore.
What are the dimensions of the 6210-Z deep-groove ball bearing?
With an internal diameter of 50 mm, an external diameter of 90 mm and a width of 20 mm, the assembly complies with standardised dimensions. The outer ring is cylindrical, with no flange or ring groove. The bearing can be fitted precisely into corresponding housing seats and onto shaft shoulders.
What does the ‘-Z’ designation mean for this roller bearing?
The suffix -Z denotes a cover plate made of profiled sheet steel, fitted on one side. It acts as a non-contact gap seal to prevent the ingress of larger particles of dirt. As there is no direct sliding contact with the inner ring, the frictional torque remains low. The opposite end face is left open, allowing grease or lubricating oil to enter unhindered.
What is the significance of the standard radial bearing clearance?
Normal radial bearing clearance refers to the internal radial clearance of the rolling elements in their unloaded initial state. It is designed for standard fits and normal operating temperatures, at which the inner and outer rings heat up evenly. Once mounted on the shaft, this clearance is reduced, contributing to reliable operation without excessive stress.
What is the temperature range for which the bearing is designed?
The permissible operating range is from -20 to +150 degrees Celsius. The dimensional stability of the bearing rings made from 100Cr6 rolling bearing steel and the sheet steel cage remains unchanged within this temperature range. When designing the bearing arrangement, care must be taken to select a lubricant that also covers this temperature range.
What materials is the 6210-Z deep-groove ball bearing made of?
The inner ring, outer ring and rolling elements are made of standard roller bearing steel (100Cr6), which ensures high dimensional stability. The rolling elements are guided by a stamped sheet steel cage, which keeps the balls at a distance from one another. This design has no electrical insulation and complies with tolerance class P0/PN or ABEC 1.
How is the single-sided bearing lubricated?
Through the open rear end, lubricating oil or grease flows directly from inside the housing to the raceways and balls. The sealed Z-ring usually faces the outside to prevent the ingress of dirt. When grease is specifically applied, the cover plate also acts as a retaining element to prevent the lubricant from escaping uncontrollably.
SKF Group
Sven Wingquists Gata 2, 415 50 Gothenburg, Sweden
info@skf.com, https://www.skf.com/uk/footer/site-ownership
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