SKF BK 1212 needle roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Needle roller bearing
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Other brands for this category
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Description
SKF BK 1212 belongs to needle roller bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for BK 1212 and any equivalents.
When a radial envelope is too tight for a ball bearing, the SKF BK 1212 needle roller bearing is a common answer. It carries high radial loads in a very small cross-section and uses a steel cage. There is no inner ring: the shaft itself is the raceway, ground to suit. That keeps the assembly compact and simple. MR Industrial Accessories supplies this bearing and can help you confirm the size before you order.
Read the code before you measure anything. In the BK series, the letters set the design type and the digits give dimensions in millimeters. Take BK 1212: the first pair, 12, is the bore carried by the needles, and the second pair, 12, is the overall width. The same pattern applies across the range, so you can tell from the designation whether a candidate will fit your housing.
You will find this bearing in gearboxes, oil pumps, compressors, textile machinery, packaging lines and chain or belt drives. It also shows up in power tools, conveyor rollers and farm equipment. Because it handles high radial loads with a small outside diameter, it works well when a bushing has to be replaced or when the shaft cannot be machined to accept a bearing with an inner ring.
Selection starts at the shaft, since that surface is the raceway. Check its hardness and roughness first. Fit the bearing into the housing with a light interference and control the radial clearance. Press it cold or with moderate heating, and do not strike the needles. Grease or oil both work, depending on the closure: an open bearing needs external radial shaft seals. Keep shaft and housing aligned so the needle edges are not overloaded.
Interchange between brands is decided by the main dimensions, not by similar-looking codes. Bore, outside diameter and width must match. Tolerances, cage style and the presence or absence of an inner ring also have to be compared. If you are unsure, send us the shaft and housing dimensions and we will help you find the equivalent reference.
MR Industrial Accessories supplies SKF bearings alongside other power transmission lines. For the BK 1212, or to confirm a cross from another brand, message us on WhatsApp with the code or the dimensions. We will come back with the alternative and a quote.
Dimensions
Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.
Frequently asked questions
- What does BK mean in a needle roller bearing?
- BK denotes a needle roller bearing of a particular design: steel cage, no inner ring, and edges that let it run directly on the shaft. The digits after the letters give bore and width in millimeters, following standardized dimensions rather than an arbitrary series code.
- Can it be mounted without an inner ring?
- Yes. It is made to run straight on the shaft, which serves as the raceway, so the shaft needs suitable hardness and roughness. If the shaft is not heat treated, a version with an inner ring or a bushing may be the better route. Ask us before mounting to avoid premature wear.
- How do I request a quote for the BK 1212?
- Send us a WhatsApp message with the code BK 1212 or with your shaft and housing dimensions. A photo of the old part also helps. We will reply with the quote. MR Industrial Accessories supplies SKF bearings and other brands.