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DBH radial shaft seal (oil seal), special design A 039, cross-section view · DBH 5711
DBH 5711 radial shaft seal — 50.8 x 81 x 17.85

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DBH 5711 radial shaft seal — 50.8 x 81 x 17.85

Manufacturer part number5711
Brand
DBH
Category
Seals
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Description

DBH 5711 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 5711 and any equivalents.

For rotating equipment that needs reliable sealing, the DBH 5711 radial shaft seal keeps lubricant in and contaminants out. Its A 039 design features a single lip with a spring, and the dimensions are shaft 50.80 mm, housing 81.00 mm, height 17.85 mm. MR Industrial Accessories supplies this seal and can help you confirm the right fit for your application.

The DBH 5711 is a radial shaft seal identified by the 5711 code within the DBH line. It uses the A 039 design, which means a single sealing lip with a spring. The three critical dimensions are 50.80 mm for the shaft, 81.00 mm for the housing bore, and 17.85 mm for the overall height. When replacing a worn seal, matching these measurements is essential to avoid leaks and premature failure.

You will find this seal in gearboxes, centrifugal pumps, electric motors, compressors, and power transmission units. Its job is to hold oil or grease inside while blocking dust, water, and particles that can damage bearings and gears. As a wear component, it should be replaced when you notice leaks, unusual noises, or hardening of the lip.

Proper installation starts with a clean shaft free of burrs and marks, and a sealing surface with the correct roughness. Lubricate the lip with a compatible grease before pressing it in, and keep the seal perpendicular to the shaft. Avoid hitting it directly. If the housing shows wear, you may need a seal with a larger outer diameter or a repair sleeve. Selection also depends on speed, temperature, and the lubricant used.

If you need a seal equivalent to the DBH 5711, send the code or your current dimensions via WhatsApp. MR Industrial Accessories can source alternatives from other brands or series while keeping the same dimensions and design. We can also advise whether a variant with an additional lip or double lip fits your mounting space and working conditions.

To request a quote, just message us on WhatsApp with code 5711 or the dimensions 50.80 x 81.00 x 17.85 mm. Our team reviews the options so you get the right part. MR Industrial Accessories supplies seals, bearings, and power transmission components.

Dimensions

Shaft (d)
50.8mm
Housing bore (D)
81mm
Height (h)
17.85mm
Design
A 039

Frequently asked questions

What are the dimensions of the DBH 5711 seal?
The DBH 5711 seal has a shaft diameter of 50.80 mm, a housing diameter of 81.00 mm, and a height of 17.85 mm. These dimensions correspond to the A 039 design and should be verified before replacement.
How do I know if this seal is compatible with my equipment?
Compare the dimensions of your old seal with the DBH 5711: 50.80 x 81.00 x 17.85 mm. Also consider the lubricant type, speed, and operating temperature. If unsure, send us a photo or the code on WhatsApp for advice.
Can I replace the DBH 5711 with another brand?
Yes, as long as the dimensions and design are equivalent. The 5711 code and dimensions 50.80 x 81.00 x 17.85 mm are your reference for finding alternatives. Contact us on WhatsApp and we will suggest options from other brands.
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