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SKF
Axial Deep Groove Ball B. SKF 51128
- Technical data
- Inner diameter
- 140 mm
- Outer diameter
- 180 mm
- Width
- 31 mm
- Material
- Standard bearing steel
- Cage
- Sheet steel cage
- Running accuracy
- Tolerance class P0/PN2 / ABEC 1
- Product range
- Axial deep groove ball bearing
- Operating direction
- Single direction bearing
- Angular adjustment
- Non-angle adjustable
- Temperature range
- -30 to +150 °C
- Weight
- 2,05 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 2 | 12,97 € | 246,34 € |
| 5 | 25,93 € | 233,38 € |
Axial Deep Groove Ball B. SKF 51128
The SKF 51128 axial deep-groove ball bearing, with a bore of 140 mm and an outside diameter of 180 mm, accommodates high axial loads in one direction.
The SKF 51128 single-direction axial deep groove ball bearing is particularly suitable for bearing arrangements that must accommodate purely axial loads in one direction. With a bore of 140 mm, an outside diameter of 180 mm and a height of 31 mm, this rolling bearing supports rotating components. Manufactured from standard 100Cr6 rolling-element bearing steel, it ensures dimensional stability within an operating temperature range of -30 to +150 degrees. You receive a separable component to standard tolerance P0/ABEC 1, which facilitates the separate assembly of the shaft ring, housing ring and ball-cage unit.
What are the suitable applications for the 51128 axial deep-groove ball bearing in machinery and plant?
Designs subject to purely axial loads utilise this bearing’s single-sided support. The design guides shafts in one axial direction and absorbs thrust forces. Typical applications include vertical bearing arrangements subject to axial loads. As axial deep-groove ball bearings are sensitive to angular misalignment, the non-angle-adjustable model 51128 requires a flat and perpendicular mounting surface in the housing. This bearing does not provide radial support; for this, it must be combined with a separate radial bearing.
What is the function of the sheet steel cage in the 51128 axial deep groove ball bearing?
The integrated sheet steel cage maintains a uniform spacing between the rolling elements and prevents the balls from coming into contact with one another. This reduces friction during operation, which promotes an even load distribution across the entire raceway. At the same time, the weight of the ball-cage assembly remains low. In combination with 100Cr6 rolling bearing steel, the bearing is suitable for operating temperatures between –30 and +150 degrees. When designing the assembly, ensure that the housing and shaft washers make full-surface contact.
What are the dimensions of the 51128 axial deep-groove ball bearing?
With a bore of 140 mm, an outside diameter of 180 mm and a width of 31 mm, this model offers a compact overall height for axial loads. The tolerances comply with accuracy class P0/PN or ABEC 1, meaning that the mounting dimensions conform to standardised specifications for axial roller bearings.
Can the 51128 axial deep-groove ball bearing also accommodate radial forces?
Pure axial deep-groove ball bearings of this type are designed to accommodate axial forces only and must not bear any radial loads. If combined loads occur in your application, you must provide radial support by means of an additional radial bearing. Otherwise, the balls will run unevenly in the grooves of the rings, which accelerates wear.
What components are included in the bearing set supplied?
The scope of supply includes the single-acting axial deep-groove ball bearing without a washer. The assembly consists of a shaft disc with a smaller bore, a housing disc with a larger internal diameter, and the ball-cage ring made of sheet steel. All discs can be fitted individually, which makes installation onto the shaft and into the bearing housing easier.
Up to what temperatures can bearing 51128 be operated?
Manufactured from 100Cr6 rolling-element bearing steel with a sheet steel cage, the bearing is designed for a temperature range of -30 to +150 degrees. In practice, the thermal load capacity of the entire system depends largely on the lubricant selected. Select the grease or lubricating oil to suit the actual operating temperature and the environmental conditions of your plant.
What does the specification ‘angle not adjustable’ mean in terms of installation?
Axial deep-groove ball bearings with flat washers are sensitive to misalignment and skew. The contact surfaces on the shaft and housing must be strictly perpendicular to the axis of rotation. Even slight angular misalignments lead to uneven load distribution and increased edge pressure. If misalignment is unavoidable, designs featuring a spherical housing disc and a shim should be considered instead.
What is the significance of tolerance class P0/PN in design?
Tolerance class P0 corresponds to the standard accuracy (normal tolerance or ABEC 1) for rolling bearings. It defines mandatory limit dimensions for bore diameters, outer diameters and the radial runout of the bearing rings. For common mechanical engineering applications, this tolerance class offers the right balance between dimensional accuracy and ease of fitting onto ground or finely turned shaft seats.
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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