DBH 8229 radial shaft seal — 39.42 x 63.55 x 12.7

DBH 8229 belongs to radial shaft seal, part of our Seals range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 8229 and any equivalents.

When a shaft starts weeping oil or grease, the usual culprit is the lip seal at the housing. The DBH 8229 is a radial shaft seal built for that job: it holds lubricant inside and keeps dust and water out of equipment with a turning shaft. Its size — 39.42 mm at the shaft, 63.55 mm at the housing, 12.70 mm wide — places it in gearboxes, pumps, motors and transmissions. MR Industrial Accessories supplies this brand and can help you match it to your application.

The code breaks down simply. 8229 is the designation you quote when ordering. The three measurements follow in order: d for the shaft, D for the housing bore, h for the width. This one runs 39.42 mm shaft, 63.55 mm housing, 12.70 mm height. The Lx design is a single lip with a spring, which is what you want on a lubricated rotating shaft. The elastomeric lip rides against the shaft while the metal case presses into the housing to hold the seal in place.

You will find this seal in gearboxes, centrifugal pumps, electric motors, rollers and other power transmission equipment. In each case it does two things at once: it keeps the lubricant where it belongs and it stops external contamination from reaching the bearings. Treat it as a wear part. Dripping, unusual noise or shaft play are signs it is time to replace it. Agricultural machinery, road equipment and general industrial drives are other common homes for this size.

Installation is straightforward if you prepare the surfaces first. Clean the shaft and housing, remove burrs and scratches, and put a light film of lubricant on the lip before pressing it in. Seat the seal perpendicular to the shaft and avoid hammer blows that could deform the case. When picking a replacement, match d, D and h, then check speed, temperature and the fluid in use. A worn shaft may call for an auxiliary lip or a wear sleeve.

If you need a cross-reference for the DBH 8229, send the code along with the shaft, housing and width measurements. A photo of the old seal or the equipment drawing works too. We check the designation against available alternatives and confirm the closest match, with no obligation on your side. Getting the dimensions right is what keeps the joint leak-free.