-
Bearings
Bearings
-
Housings/housing Units
Housings/housing Units
-
Linear Technology
Linear Technology
-
V-Belts
V-Belts
-
Seals
Seals
SKF
Deep Groove Ball Bearings SKF 4211 ATN9
- Technical data
- Inner diameter
- 55 mm
- Outer diameter
- 100 mm
- Width
- 25 mm
- Material
- Standard bearing steel
- Ball rows
- Double row bearing
- Seal
- None, open bearing
- Cage
- Polyamide 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 +120 °C
- Weight
- 0,8 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 15 | 4,14 € | 78,67 € |
| 30 | 8,28 € | 74,53 € |
Deep Groove Ball Bearings SKF 4211 ATN9
The SKF 4211 ATN9 deep groove ball bearing offers double-row load-carrying capacity with a 55 mm bore, 100 mm outer diameter and 25 mm width.
The SKF 4211 ATN9 deep groove ball bearing is a double-row radial ball bearing designed for rotary motion in mechanical engineering and plant construction. Manufactured from standard rolling-element bearing steel 100Cr6, the design primarily absorbs radial forces and supports rotating shafts with standardised accuracy. Thanks to its double-row design, the bearing distributes loads across two rows of balls, which increases its load-carrying capacity compared to single-row variants with the same outer diameter. The bearing has a standard tolerance of P0/PN (ABEC 1) and is suitable for industrial repairs as well as series production applications.
What is the 4211 ATN9 double-row deep groove ball bearing suitable for?
The use of the double-row deep groove ball bearing 4211 ATN9 is particularly recommended where high radial loads are present with limited axial installation space. Typical applications include industrial bearing arrangements requiring high radial load capacity. As this is an open bearing without integrated seals, it operates with low rotational resistance. Operation requires a clean installation environment with a lubricant supply provided by the customer, for example in oil-lubricated housings. The permissible temperature range is from –20 to +120 degrees Celsius.
What are the distinctive features of the ATN9 version with a polyamide cage?
The suffix ATN9 denotes a polyamide ball-retaining cage, which ensures quiet and smooth running. Polyamide reduces the moving mass within the bearing and promotes stable vibration behaviour during dynamic rotational movements. With dimensions of 55 x 100 x 25 mm and standard radial clearance, the component fits onto cylindrical shaft seats without a flange. Before assembly, the fits must be checked and a suitable lubricant supply provided in the bearing housing.
What are the dimensions of the 4211 ATN9 deep-groove ball bearing?
This bearing has an inside diameter of 55 mm, an outside diameter of 100 mm and a width of 25 mm. Both rings are made of 100Cr6 rolling bearing steel. The outer ring has no ring groove and no flange, which means the rolling bearing can be fitted flush into cylindrical housing bores.
How does a double-row deep-groove ball bearing differ from a single-row one?
A double-row deep-groove ball bearing comprises two rows of rolling elements arranged side by side in separate raceways. Thanks to this design, the bearing can withstand greater radial forces than single-row variants with a comparable shaft diameter. It is therefore suitable for designs requiring higher load-carrying capacity whilst maintaining specified axial dimensions.
What does the designation ATN9 mean for the manufacturer SKF?
At SKF, the designation ATN9 refers to a polyamide cage that keeps the rolling elements at a uniform distance apart. This material is characterised by its low mass and damping properties. As a result, the deep-groove ball bearing operates quietly and with low friction within the specified temperature range of -20 to +120 degrees Celsius.
What type of lubrication does this open roller bearing require?
As the bearing is of an open design and has no integrated seals or cover plates, it operates without any factory-fitted sealing. You apply grease or lubricating oil to the component via the surrounding housing during installation. An external housing seal protects the raceways from dirt particles and moisture.
What does tolerance class P0 mean for this ball bearing?
Tolerance class P0 (equivalent to PN or ABEC 1) defines the standard dimensional and running accuracy for rolling bearings. It meets the practical requirements of general mechanical engineering. For users, this means trouble-free interchangeability and a precise fit on standard cylindrical shaft and housing seats.
What is the clearance of the 4211 ATN9 deep-groove ball bearing?
The bearing has standard radial clearance. This defined clearance between the inner ring, outer ring and balls compensates for minimal thermal expansion during operation without causing excessive play or undesirable preload. With standard fits and normal operating temperatures, this helps to ensure stable concentricity.
SKF Group
Sven Wingquists Gata 2, 415 50 Gothenburg, Sweden
info@skf.com, https://www.skf.com/uk/footer/site-ownership
10012459