NSK H 307X adapter sleeve
- Brand
- NSK
- Category
- Bushings and sleeves
- Subcategory
- Adapter sleeve
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Description
NSK H 307X belongs to adapter sleeve, 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 H 307X and any equivalents.
An NSK H series adapter sleeve lets you seat a tapered bore bearing on a plain cylindrical shaft. The sleeve sits between shaft and bearing, and a lock nut with a lock washer holds the assembly in place. This removes the need to machine a taper into the shaft, which keeps mounting and replacement work simple on industrial equipment.
The code tells you what the sleeve fits. The letter H is followed by a number that refers to the shaft diameter, and the X suffix marks a dimensional variant inside the series. References such as H 204X, H 205X, H 206X and H 207X each cover a different shaft size. Each sleeve works together with a tapered bore bearing and is retained by a KM lock nut and an MB lock washer.
Typical uses cover machine tools, transmission equipment, conveyors, pumps and fans, among other industrial machinery. Because the bearing mounts directly on a cylindrical shaft, maintenance crews can swap a bearing without special machining, which keeps repair time and downtime down.
Choosing the right reference comes down to two things: the shaft diameter and the bearing you intend to mount. The H series matches tapered bore bearings with a 1:12 taper. Before mounting, clean the mating surfaces and check alignment. Lubricate as required and tighten the nut together with the lock washer so the fit stays secure under vibration.
Adapter sleeves are standardized, so equivalent references exist across brands. Interchangeability depends on dimensions and taper rather than on the name on the box. If you are holding a part number from another manufacturer or an unmarked part, send it over and we can point you to the matching reference. Confirming shaft and bearing dimensions before you replace a sleeve is always worthwhile.
To request a quote for an NSK H series adapter sleeve, message us on WhatsApp or by email with the part number or the size you need. We also help you identify the correct KM lock nut and MB lock washer for the sleeve.
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 the X suffix mean in H series adapter sleeves?
- It identifies a dimensional variant within the series, so H 204X differs in its dimensions from other references. Check the shaft diameter and the bearing taper before you select one.
- How is an NSK adapter sleeve mounted?
- Slide the sleeve onto the shaft, fit the tapered bore bearing, then secure it with a KM lock nut and an MB lock washer. Clean surfaces, lubrication and correct nut tightening are what keep the assembly from loosening.
- Can an adapter sleeve from another brand be replaced with an NSK one?
- Yes, provided the dimensions and taper match. These are standardized parts with cross-brand equivalents. Send us the original part number and we will tell you the compatible NSK reference.