

TIMKEN HA3120 adapter sleeve
- Brand
- TIMKEN
- Category
- Bushings and sleeves
- Subcategory
- Adapter sleeve
- Series
- HA
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
Request your quote via WhatsApp or email, with the quantity you need.
Other brands in this category
Ask us about alternatives. Equivalence is verified for each reference and application.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
Description
TIMKEN HA3120 is a reference of adapter sleeve, within Bushings and sleeves. Request a quote for HA3120 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The HA series adapter sleeve is a mounting component used to secure bearings with a tapered bore onto cylindrical shafts. It is manufactured with an external thread and a keyway, which allows axial adjustment by means of a lock nut. It is a key part in spherical roller bearing assemblies, since it guarantees a firm hold and easy removal. MR Accesorios Industriales sells the TIMKEN HA series, with standard sizes for different industrial applications.
The HA series designation consists of the letters HA followed by a three-digit number. That number indicates the shaft diameter on which the sleeve is mounted, expressed in inches as is customary in this line. For example, HA306 corresponds to a sleeve for a bearing with a 30 mm bore, HA307 for a 35 mm bore, HA308 for a 40 mm bore, and so on, always with the shaft in inches. Any suffixes that may appear after the number refer to length or treatment variants, but no additional letters are added in the standard HA series. Knowing this nomenclature lets you select the correct sleeve for each shaft diameter.
These sleeves are used in a wide variety of industrial equipment in Argentina. They are common in gear reducers and gearboxes, belt conveyors, mills, mixers and machines for the food industry. They are also found in applications where spherical roller bearings must be mounted on cylindrical shafts, such as industrial fans, centrifugal pumps and process equipment. The TIMKEN HA series offers a reliable solution for securing bearings on shafts that are not tapered, making mounting and maintenance easier.
To select the right sleeve, take into account the shaft diameter and the type of bearing you are going to mount. The sleeve is placed on the cylindrical shaft and the bearing is fitted onto its tapered surface. The lock nut, which threads onto the sleeve's external thread, allows the bearing to be moved axially to achieve the desired internal clearance. It is essential to verify assembly alignment and lubricate the thread and the tapered surface before mounting. The keyway prevents relative rotation between the sleeve and the shaft, ensuring uniform load transmission.
As for interchangeability, TIMKEN HA series sleeves are compatible with those of other brands that follow the same dimensional standard. When looking for a replacement, it is important to compare the shaft diameter, the thread and the taper. MR Accesorios Industriales sells the TIMKEN HA series and can advise you on equivalence with other references. If you need a sleeve for a specific bearing, contact us on WhatsApp with the part number or shaft dimensions and we will quote you promptly.
MR Accesorios Industriales distributes industrial components. In addition to the TIMKEN HA series, we offer a wide range of bushings, sleeves and mounting accessories. If you cannot find the reference you are looking for, write to us on WhatsApp with the part number or model you need and we will point out the compatible alternative. We are in Buenos Aires, Argentina, and we serve the entire country.
Dimensions
- Bore
- 3 7/16 in
Frequently Asked Questions
- What does the HA306 designation mean?
- The HA series indicates an adapter sleeve. The number 306 indicates the bearing size (30 mm bore); the HA sleeve is for a shaft in inches. The first digit (3) indicates the associated bearing series and the last two (06), multiplied by 5, the bearing bore (30 mm). Thus, HA306 is for a bearing with a 30 mm bore, HA307 for a 35 mm bore, and so on, with the shaft in inches.
- How is an HA series adapter sleeve mounted?
- The sleeve is placed on the cylindrical shaft, the bearing is mounted on the tapered surface and the lock nut is threaded on. Turning the nut moves the bearing axially and achieves the desired internal clearance. It is key to lubricate the thread and the taper, and to verify alignment.
- Are TIMKEN HA sleeves interchangeable with other brands?
- Yes, TIMKEN HA series sleeves follow dimensional standards that allow interchangeability with other brands that respect the same shaft diameter, thread and taper specifications. It is always advisable to verify the dimensions before replacing. At MR we advise you on finding the equivalent.
