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SKF 17270 rotary shaft seal 1.75 in ID 2.374 in OD .313 in width NBR CRW1

SKF

SKF 17270 shaft seal 1.75 in ID 2.374 in OD .313 in width NBR CRW1

SKU CH-XQTZ-9V1TC

Rotary shaft seal with 1.75 in inside diameter, 2.374 in outside diameter and .313 in width for oil and grease retention

  • ColorTransparent
  • NBR lip resists oil, fuel and water
  • 75 in ID fits standard shaft sizes
  • 374 in OD matches common housing bores
  • .313 in width suits compact installations
  • 3 180 RPM rating handles high-speed rotation

Shaft seal for rotating equipment

The SKF 17270 is a CRW1 rotary shaft seal designed for 1.75 in inside diameter and 2.374 in outside diameter applications. It uses a single nitrile rubber lip with a carbon steel spring to retain lubricants and exclude contaminants in automotive and industrial machinery.

Thermals noise and power draw

The seal operates at maximum surface speeds of 7.36 mps and rotational speeds up to 3,180 RPM while withstanding pressures to 10 psi. Nitrile rubber lip material maintains sealing performance across the temperature range encountered with mineral oils, gasoline, diesel, greases and hot water.

Bundled accessories and software

The acrylic-coated case simplifies installation by protecting the seal lip during press-fit into the housing bore. No additional tools, lubricants or software are supplied; the component is a standalone replacement part for compatible shaft and bore dimensions.

Highlights

  • NBR lip resists oil, fuel and water
  • 75 in ID fits standard shaft sizes
  • 374 in OD matches common housing bores
  • .313 in width suits compact installations
  • 3 180 RPM rating handles high-speed rotation

Specifications

BrandSKF
ColorTransparent

Questions about this item

How do I press the 1.75 in ID CRW1 seal into a 2.374 in bore without damaging the acrylic coating?

Use a flat sleeve driver that contacts only the outer metal case, press squarely until the case bottoms out, and never hammer the NBR lip or the carbon-steel spring.

When should I plan to replace the NBR lip that handles diesel and gasoline?

Inspect the lip at every oil change; replace it once the contact surface shows hardening, cracking or a groove deeper than 0.313 in from the spring.

At what shaft speed does the 7.36 mps surface-speed limit become the controlling factor?

The 7.36 mps limit is reached at roughly 3,180 RPM on a 1.75 in shaft; sustained operation above that speed will overheat the nitrile lip first.

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