
SKF 30X45X8 CRS1 V radial shaft seal
- Brand
- SKF
- Category
- Seals
- Subcategory
- Radial shaft seals
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Description
SKF 30X45X8 CRS1 V 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 30X45X8 CRS1 V and any equivalents.
SKF CRS/V radial shaft seals feature a single lip that keeps grease and oil in while keeping dust and water out of rotating shaft assemblies. They are common in gearboxes, pumps, electric motors and other power transmission equipment where reliable shaft sealing protects bearings and prevents lubricant loss. MR Industrial Accessories supplies these seals as part of its industrial seals offering.
The part number follows a simple sequence: shaft diameter, outside diameter and width, all in millimeters. For instance, 20X30X7 CRS1 V fits a 20 mm shaft in a 30 mm housing with a 7 mm width. Likewise, 30X45X8 CRS1 V is sized for a 30 mm shaft. The CRS portion denotes the single-lip family, and the V suffix indicates the elastomer variant and lip style. Always confirm these three dimensions against your drawing or the original seal before ordering.
These seals are found in a broad range of industrial settings: gearboxes and motovibrators, centrifugal pumps, fans, conveyor belts, machine tools and process equipment. In food and beverage plants, they help keep lubricant from reaching the product. In mining and cement operations, the lip must seal effectively against dust-laden environments. In every case, the goal is the same: separate the lubricant from the surroundings and support bearing life.
Selection starts with the shaft condition. A new seal will not perform on a shaft that is scratched or has burrs. Check that the shaft diameter falls within the recommended tolerance, that the housing is free of burrs and that the lip is centered. Pre-lubricating the lip with the same grease or oil used in the equipment eases installation and prevents dry start-up. For high peripheral speed or temperature, verify the appropriate elastomer variant. Proper shaft alignment relative to the housing also affects how long the seal lasts.
Interchangeability is based on millimeter dimensions and lip type, not on a single universal code. Each manufacturer uses its own nomenclature, but a 20X30X7 single-lip seal can replace another with the same dimensions and lip configuration, as long as the material suits the fluid and operating temperature. Matching the three dimensions alone is not sufficient; the lip type and elastomer must also be compared.
When you have the seal part number, send it via WhatsApp or email to MR Industrial Accessories along with the dimensions or a photo of the part. Our team will confirm the corresponding CRS/V variant and provide a quote. If the part number is not available, just send the shaft diameter, outside diameter and width; those three dimensions are enough to identify the seal.
Dimensions
Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.
Frequently asked questions
- What do the dimensions 20X30X7 mean on a seal?
- They represent shaft diameter, outside diameter and width, in that order and in millimeters. The first value is the shaft where the lip runs, the second is the housing bore and the third is the overall width. Verify all three before ordering.
- Can I replace a seal from another brand with an SKF CRS/V?
- Yes, if the three dimensions and the lip type match. Interchangeability depends on dimensions and configuration, not on the manufacturer's code. Also check that the elastomer is compatible with the fluid and operating temperature.
- How do I install a radial shaft seal without damaging the lip?
- Lubricate the lip with the equipment's grease or oil, make sure the shaft has no burrs and press the seal evenly and perpendicular to the housing. Avoid striking the lip and ensure it sits centered on the shaft.

