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Seals
SKF
Deep Groove Ball Bearings SKF 6215 -2Z
- Technical data
- Inner diameter
- 75 mm
- Outer diameter
- 130 mm
- Width
- 25 mm
- Material
- Standard bearing steel
- Ball rows
- Single row bearing
- Seal
- Cover on both sides
- 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 +120 °C
- Weight
- 1,203 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 25 | 1,65 € | 31,26 € |
| 35 | 3,30 € | 29,61 € |
Deep Groove Ball Bearings SKF 6215 -2Z
The 6215-2Z deep groove ball bearing from SKF, measuring 75x130x25 mm, features sheet metal shields on both sides to protect against dirt particles.
The 6215-2Z deep groove ball bearing is a single-row radial ball bearing, manufactured from standard rolling-element bearing steel (100Cr6). This rolling bearing primarily withstands radial loads and supports shafts subjected to moderate axial forces in both directions. With an inner diameter of 75 mm, an outer diameter of 130 mm and a width of 25 mm, this bearing is suitable for rotating shafts in various mechanical assemblies. The integrated sheet steel cage ensures that the rolling elements are guided precisely along the raceway.
In which installation scenarios does the 6215-2Z deep groove ball bearing prove its worth?
Design engineers use the 6215-2Z deep groove ball bearing where rotating shafts are supported at medium to high speeds. The component is designed for applications where radial loads are the primary concern. The double-sided lip seal protects the bearing interior from coarse particles, whilst retaining the lubricant within the bearing. With a permissible temperature range of –20 to +120 degrees, the bearing is designed for use in standard environments without exposure to extreme heat.
What are the distinctive features of the double-sided cover with cover plates?
The designation -2Z stands for two non-contacting cover plates made of profiled sheet steel. Compared to sliding seals, these metal covers do not cause any additional friction, which keeps heat build-up during operation to a minimum and enables higher speeds. In combination with the standard radial bearing clearance and the standard tolerance class P0/PN (ABEC 1), this provides a versatile rolling bearing. Before assembly, check that the fits between the shaft and the housing bore are compatible with this standard tolerance.
What are the key features of the 6215-2Z deep-groove ball bearing?
This single-row deep-groove ball bearing has a bore of 75 mm, an outside diameter of 130 mm and a width of 25 mm. Manufactured from 100Cr6 rolling-element bearing steel, it features a sheet steel cage and end plates on both sides. It accommodates radial loads as well as moderate axial loads in both directions.
What is the function of the cover plates on both sides (-2Z)?
The designation -2Z refers to sheet metal cover plates fitted on both sides. These act as a non-contact gap seal to prevent the ingress of solid particles. As there is no frictional contact with the inner ring, the torque remains low, meaning that the bearing is designed for higher speeds than versions with contact sealing lips.
What does ‘normal radial bearing clearance’ mean for this bearing?
The normal radial bearing clearance corresponds to the standard operating clearance when the bearing is not installed. This clearance compensates for radial contraction resulting from standard fits on the shaft, as well as moderate heating during operation. For standard applications without significant temperature differences between the inner and outer rings, this constitutes the standard bearing clearance.
What is the temperature range for which the 6215-2Z deep-groove ball bearing is designed?
The permissible temperature range for this bearing is between -20 and +120 degrees Celsius. This range is determined by the standard rolling-bearing steel used, the sheet-steel cage and the integrated end plates. The bearing is therefore suitable for use in industrial environments within this defined temperature range.
What does the tolerance class P0 or ABEC 1 mean?
P0, or ABEC 1, defines the standard tolerance for dimensional and running accuracy in rolling bearings. It specifies standardised limit dimensions for the bore, outer diameter and width. For general mechanical and plant engineering, this tolerance class provides the standard level of accuracy required for mounting on shafts and in housing bores.
How does the -2Z variant differ from open deep-groove ball bearings?
Open deep-groove ball bearings have no covers and require a sealed housing with separate seals, as well as an external lubricant supply. The -2Z version is fitted with cover plates on both sides, which retain the initial grease inside the bearing and protect the raceways from the ingress of dust and particles.
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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