DBH 9478Pol radial shaft seal — 21.9 x 40 x 7/8
- Brand
- DBH
- Category
- Seals
- Subcategory
- Radial shaft seals
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Description
DBH 9478Pol 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 9478Pol and any equivalents.
The DBH 9478Pol is a radial shaft seal engineered to retain lubricant and block contaminants in rotating equipment. It fits a 21.90 mm shaft within a 40.00 mm bore, with an overall height of 7.00/8.00 mm. The Lx-R-H configuration incorporates a flexible lip, a metal case, and a garter spring, making it suitable for gearboxes, pumps, and motors where reliable fluid sealing is required.
This seal’s key dimensions are shaft 21.90 mm, housing 40.00 mm, and height 7.00/8.00 mm. The Lx-R-H designation refers to the standard lip, reinforced shell, and spring-loaded design that is common in industrial rotating shafts. MR supplies DBH products and verifies each part number against the manufacturer’s specifications before quoting.
Typical installations include gearboxes, centrifugal pumps, electric motors, compressors, and various power transmission assemblies. In each case, the seal serves the same purpose: keeping oil or grease inside while preventing dust, moisture, and debris from entering. It can also act as a secondary closure in bearing arrangements where space is tight.
To ensure proper fit, confirm that the shaft and housing diameters match the listed values and that the available axial space can accommodate the 7.00/8.00 mm height. The shaft surface should be smooth and free of burrs or deep scoring. During installation, lubricate the lip, press the seal in squarely using a suitable tool, and avoid hammering directly on the lip. If the shaft is worn, consider a repair sleeve.
If you need a different size or an equivalent, send the part number, the shaft, housing, and height measurements, and a photo of the old seal if available. Our team can review sealing alternatives and confirm which option fits without altering the housing.
For a quote on the DBH 9478Pol or to discuss an equivalent, contact us via WhatsApp with the part number and dimensions. We will respond with the option that best matches your equipment.
Dimensions
- Shaft (d)
- 21.9mm
- Housing bore (D)
- 40mm
- Height (h)
- 7.00/8.00mm
- Design
- Lx-R-H
Frequently asked questions
- Can this seal replace one from another brand?
- Yes, if the shaft, housing, and height dimensions all match. The Lx-R-H design is widely used, so an equivalent from another brand may work. Check the lip material and type before installing.
- How do I request an equivalent?
- Message us on WhatsApp with part number 9478Pol and the dimensions you need. If you have the old seal, send a photo and measurements taken with a caliper. We will look for an alternative that fits your equipment.
- What are the dimensions of the DBH 9478Pol oil seal?
- The shaft diameter is 21.90 mm, the housing diameter is 40.00 mm, and the height is 7.00/8.00 mm. The design is Lx-R-H. Verify these values against the manufacturer's page and the seal being replaced before quoting.