
SKF MB 2 lock washer
- Brand
- SKF
- Category
- Bushings and sleeves
- Subcategory
- Lock washer
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Other brands for this category
Ask us for alternatives. We check every equivalent against the part number and your application.
SKF and FAG: matching part numbers →SKF and TIMKEN: matching part numbers →SKF and BGL: matching part numbers →
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Description
SKF MB 2 belongs to lock washer, part of our Bushings and sleeves range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for MB 2 and any equivalents.
The SKF MB series lock washer is a key component in bearing mounting systems. It works with a slotted lock nut to hold bearings and other parts firmly on threaded shafts. An inner tab engages a groove on the shaft, while outer tabs are bent into notches on the nut, creating a mechanical lock that resists vibration and rotation. MR Industrial Accessories supplies this series as part of its range of bearing accessories.
The MB designation consists of the letters MB followed by a number that indicates size. This number is not a measurement but a reference that matches a slotted lock nut of the same series. Each washer features an inner tab for the shaft groove and multiple outer tabs that can be folded into the nut's notches. By choosing the correct numeric suffix, you ensure compatibility with the nut.
These lock washers are found in many industrial settings across the United States and Latin America. They appear in gearboxes, pumps, fans, conveyors, and process equipment, where they secure bearing lock nuts on shafts. Industries such as mining, cement, steel, and food processing rely on them. By preventing nut loosening, they help maintain bearing preload and contribute to the assembly's service life. They are common in plant maintenance and equipment manufacturing.
When selecting a washer, consider the size of the slotted lock nut it will secure. The MB series corresponds to SKF KM nuts. Check that the inner tab fits into the shaft groove and that the outer tabs align with the notches on the nut. During installation, bend one outer tab toward the nut using a suitable tool, taking care not to damage the thread. Proper seating and correct nut position are important. Lubrication and clean threads also affect the outcome.
For equivalences, SKF MB series lock washers can be interchanged with those from other brands that follow the same dimensional standard. However, codes may differ between manufacturers, so it is wise to verify critical dimensions: inner diameter, outer diameter, thickness, and number of tabs. If you need a replacement, provide the original part number along with shaft and nut measurements. Our team can help you find a suitable equivalent.
If you are unsure which lock washer you need, send the nut part number or shaft measurements via WhatsApp or email. We will quote the SKF MB series and provide guidance to ensure a secure and durable fastening.
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
- How do I determine the correct MB washer number?
- The MB number corresponds to the KM slotted lock nut size. If you have the nut part number, you can select the matching MB washer. Alternatively, measure the shaft diameter and nut thread. Send that information via WhatsApp and we will assist you.
- Can MB washers be used with nuts from other brands?
- MB washers are intended for slotted lock nuts with standardized dimensions, such as KM. If the nut has the same groove and notch dimensions, the MB washer should fit. Always verify compatibility before mounting. Contact us if you need clarification.
- What is the installation procedure for an MB lock washer?
- Place the washer on the shaft with the inner tab in the groove. Thread the nut and tighten it. Then bend one outer tab into a notch on the nut using a suitable tool to avoid damaging the material. This locks the nut in place.

