DBH 8511Pol radial shaft seal — 52 x 70 x 8.5

DBH 8511Pol 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 8511Pol and any equivalents.

The DBH 8511Pol is a radial shaft seal built to hold lubricant in and keep contaminants out where a shaft turns. It fits a 52 mm shaft, a 70 mm housing bore and an 8.50 mm height, which places it in gearboxes, pumps and mid-size electric motors. MR Industrial Accessories supplies this seal within its seals and oil seals range and can help you confirm the right variant for the job.

The designation 8511Pol identifies this seal, and the three figures that matter when you read it are the shaft diameter of 52 mm, the housing diameter of 70 mm and the height of 8.50 mm. The Lx-R-H build points to a single lip with a spring, an outer metal case and an elastomer compound that stands up to oils and greases. Those dimensions are what let you swap out a worn seal on equipment running a 52 mm shaft in a 70 mm bore and keep the sealing function intact through continuous rotation.

You will run into this seal in gearboxes, centrifugal pumps, electric motors, reducers and other power transmission equipment. Its job in each case is the same: stop lubricant from escaping and stop dust, water or particles from getting in, since those contaminants speed up wear on bearings and gears. Food and textile machinery, along with process equipment that needs a dependable barrier between the lubricated side and the outside, are common places to find it.

Installation calls for checking that the shaft diameter sits inside the recommended tolerance and that the contact surface is smooth with no burrs. The housing should be clean and free of damage, and a suitable surface roughness helps the seal seat properly. Lubricate the lip with the same oil or grease used in service and avoid striking it during fitting. If the equipment runs at high peripheral speed or elevated temperatures, get in touch so we can look at a different elastomer compound or a more reinforced design.

If you are after an equivalent from another brand, send us the code 8511Pol or the exact dimensions of your seal, meaning shaft diameter, housing and height. We can also help when space is tight and you need a lower height or a double-lip version. MR Industrial Accessories advises you through the selection so the choice is the right one.

To request a quote on the DBH 8511Pol oil seal, send the code by WhatsApp to MR Industrial Accessories. We come back with the alternatives that suit your equipment, backed by the technical support your operation needs.