TIMKEN HA3120 adapter sleeve

TIMKEN HA3120 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 HA3120 and any equivalents.

For mounting a bearing with a tapered bore onto a straight shaft, the TIMKEN HA series adapter sleeve does the job. Its external thread and keyway let you adjust the bearing axially with a lock nut. This makes it a common choice in spherical roller bearing arrangements where you need a secure fit and straightforward removal.

The code tells you the shaft size. HA is followed by three digits; that number relates to the bearing bore in millimeters, while the shaft itself is measured in inches. So HA306 fits a bearing with a 30 mm bore, HA307 a 35 mm bore, HA308 a 40 mm bore, and so on. Suffixes, when they appear, point to length or treatment variations, but the standard HA series carries no extra letters. Reading the code correctly is the first step in picking the right sleeve.

You will find these sleeves in gear reducers and gearboxes, belt conveyors, mills, mixers and food processing machines. They also show up wherever spherical roller bearings need to sit on a cylindrical shaft: industrial fans, centrifugal pumps and other process equipment. The TIMKEN HA series gives you a dependable way to secure bearings on shafts that are not tapered, which simplifies both mounting and maintenance.

Selection comes down to the shaft diameter and the bearing you plan to mount. Slide the sleeve onto the cylindrical shaft, fit the bearing over its tapered surface, then thread on the lock nut. Turning the nut moves the bearing axially until you reach the internal clearance you want. Check alignment, and lubricate the thread and taper before assembly. The keyway stops the sleeve and shaft from rotating against each other, so load transfer stays uniform.

TIMKEN HA series sleeves interchange with other brands that follow the same dimensional standard. When replacing one, compare shaft diameter, thread and taper. MR Industrial Accessories supplies the TIMKEN HA series and can point you to equivalent references. Send the part number or shaft dimensions by WhatsApp or email and the team will help you choose and quote promptly.