TIMKEN H311 adapter sleeve

TIMKEN H311 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 H311 and any equivalents.

When a bearing with a tapered bore needs to sit on a cylindrical shaft, an H series adapter sleeve from TIMKEN makes the connection. The sleeve fits between shaft and bearing, and a lock nut with lock washer provides the radial interference required for the mounting. MR Industrial Accessories supplies this line to maintenance and purchasing teams across the United States and Latin America.

The code starts with H and then a three- or four-digit number that points to the sleeve size. H305, H306, H307, H308, H309, H310, H311 and H312 are examples that step up in shaft diameter. That number is not the shaft dimension itself; it ties to the tapered bearing the sleeve matches. Always begin the selection with the bearing, not the sleeve.

Use these sleeves where a cylindrical shaft has to carry a bearing that needs a tapered seat. Gearboxes and reducers, belt conveyors, mills, food processing lines, mining and cement equipment, industrial fans and large centrifugal pumps are common places to find them. They are a standard item in plants that replace spherical roller bearings.

Before mounting, confirm the bearing bore is tapered and the sleeve matches that taper. The lock nut and lock washer must be the correct ones for the sleeve. A light film of lubricant on the sleeve and the tapered seat helps the fit and reduces the risk of damage. Keep the shaft aligned and tighten the nut in a controlled way so the bearing does not distort. Check the bearing maker's instructions for internal clearance.

Other manufacturers list sleeves with similar designations, but dimensions and tolerances can differ. Verify interchangeability against both the bearing and the shaft. TIMKEN is one of the brands MR supplies, and we can help you check compatibility with other makes. If you need an alternative, send the bearing part number and the shaft diameter.

To get a quote on an H series adapter sleeve, send the full part number to MR Industrial Accessories by WhatsApp or email. You can also ask about the matching lock nuts and lock washers. The team replies promptly and can suggest equivalents or help you choose the right sleeve.