SD 20X28X4

Radial shaft seal with low cross-sectional height for needle roller bearings, SD design

Radial shaft seals with low cross-sectional height are intended for bearing arrangements that incorporate needle roller bearings.

These contact seals are designed without garter springs. SD design seals have a larger primary seal lip and a smaller auxiliary dust lip. The lips are made of polyurethane and the reinforcement ring is made of polyamide instead of metal.

  • Low cross-sectional height
  • Retain the lubricant
  • Exclude contaminants
  • Additional protection via auxiliary lip

Dimensions

d1
20 mm
 Shaft diameter
D
28 mm
 Housing bore diameter
b
4 mm
 Nominal seal width

Application and operating conditions

Operating temperature
min.-30 °C
Operating temperature
max.100 °C
Shaft surface speed
max.10 m/s
Rotational speed
max.9 549 r/min
Add to Enquiry
SKU: SD 20X28X4-SKF Category:
SKF

Description

Properties

Auxiliary lip Yes
Sealing lip material Polyurethane (AU)
Unit system Metric

Logistics

Product net weight 0.00207 kg
eClass code 23-05-09-03
UNSPSC code 31171512

(20X28X4) (SD20X28X4)

Additional information

Weight 0.00207 kg
Size (mm)

Colour

Related products