Radial shaft seals

Seals Product Introduction

**Introduction to SKF Radial Shaft Seals: Engineered for Performance and Reliability**

In demanding industrial environments, effective sealing solutions are critical to protecting rotating shafts from contamination, retaining lubricants, and ensuring long-term equipment reliability. SKF radial shaft seals are precision-engineered components designed to meet these challenges, offering superior performance across a wide range of applications—from heavy-duty industrial machinery to high-speed automotive systems and precision equipment.

### **Technical Features & Design Excellence**
SKF radial shaft seals combine advanced materials, innovative design, and rigorous manufacturing standards to deliver exceptional sealing efficiency. Key features include:

– **Robust Material Options**: SKF seals utilize high-quality elastomers (such as NBR, FKM, and ACM) and reinforced polymers, ensuring compatibility with diverse operating conditions, including extreme temperatures, aggressive chemicals, and high-pressure environments.
– **Optimized Lip Geometry**: The sealing lip is precision-designed to maintain consistent contact with the shaft, minimizing friction while effectively excluding contaminants like dust, water, and abrasive particles.
– **Enhanced Sealing Technologies**: Many SKF seals incorporate auxiliary lips, spring-loaded designs, or hydrodynamic wave patterns to improve sealing performance under dynamic conditions, reducing wear and extending service life.
– **Integrated Metal Casings**: For added durability, SKF seals often feature robust metal casings that provide structural stability and secure fitment in housings, even under vibration or misalignment.

### **Performance Advantages**
SKF radial shaft seals are trusted in critical applications due to their ability to:

– **Extend Bearing & Component Life**: By preventing lubricant leakage and blocking contaminants, SKF seals reduce wear on shafts and bearings, lowering maintenance costs and downtime.
– **Operate in Harsh Conditions**: Whether in high-speed motors, off-road vehicles, or food processing equipment, SKF seals maintain integrity under thermal cycling, chemical exposure, and mechanical stress.
– **Improve Energy Efficiency**: Low-friction designs minimize power loss, contributing to energy savings in pumps, compressors, and electric motors.

### **Typical Applications**
SKF radial shaft seals are widely used in industries where reliability is non-negotiable:

– **Industrial Machinery**: Pumps, gearboxes, conveyors, and electric motors benefit from SKF seals’ ability to handle heavy loads and harsh environments.
– **Automotive Systems**: From wheel hubs to transmission shafts, SKF seals ensure leak-free performance in passenger vehicles, commercial trucks, and off-highway equipment.
– **Precision Equipment**: Medical devices, robotics, and aerospace applications rely on SKF’s high-precision seals for smooth, contamination-free operation.

By integrating cutting-edge materials, intelligent design, and rigorous testing, SKF radial shaft seals set the benchmark for sealing solutions—delivering unmatched durability, efficiency, and protection across industries. Whether for OEMs or maintenance applications, SKF seals help engineers and operators achieve peak performance while reducing total cost of ownership.

For more details on selecting the right seal for your application, explore SKF’s comprehensive portfolio of radial shaft sealing solutions.

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Designation Shaft diameter Housing bore diameter Housing groove width Seal width Limiting speed Sealing lip material Mass
2250520
571.5 mm
622.3 mm
15.88 mm
501.0 r/min
Nitrile rubber (NBR)
1.79 kg
2250560
571.5 mm
622.3 mm
22.23 mm
501.0 r/min
Nitrile rubber (NBR)
4.24 kg
2256-2524-64 HSS8 H
581.025 mm
644.525 mm
25.4 mm
329.0 r/min
Hydrogenated nitrile rubber (HNBR)
1.62 kg
22563
57.15 mm
86.36 mm
7.468 mm
849.0 r/min
Nitrile rubber (NBR)
0.034 kg
22565
57.15 mm
87.38 mm
6.35 mm
2800.0 r/min
Nitrile rubber (NBR)
0.0295 kg
22582
57.15 mm
88.9 mm
11.13 mm
2820.0 r/min
Nitrile rubber (NBR)
0.0703 kg
225X257X16 HDS1 R
225.0 mm
257.0 mm
16.0 mm
1273.0 r/min
Nitrile rubber (NBR)
1.49 kg
225X270X15 HSS8 R
225.0 mm
270.0 mm
15.0 mm
849.0 r/min
Nitrile rubber (NBR)
0.27 kg
22618
57.15 mm
92.024 mm
11.13 mm
2820.0 r/min
Nitrile rubber (NBR)
0.0748 kg
22619
57.15 mm
92.024 mm
11.13 mm
2820.0 r/min
Nitrile rubber (NBR)
0.0771 kg
22647
57.15 mm
101.68 mm
11.13 mm
2820.0 r/min
Nitrile rubber (NBR)
0.0975 kg
22X30X4 HM4 R
22.0 mm
30.0 mm
4.0 mm
3900.0 r/min
Nitrile rubber (NBR)
0.0022 kg
22X35X7 HMS5 V
22.0 mm
35.0 mm
7.0 mm
13860.0 r/min
Fluoro rubber (FKM)
0.0078 kg
2150384
546.1 mm
590.55 mm
19.05 mm
874.0 r/min
Fluoro rubber (FKM)
4.07 kg
2150562
546.1 mm
596.9 mm
22.23 mm
874.0 r/min
Fluoro rubber (FKM)
4.11 kg
21538
54.483 mm
80.975 mm
11.91 mm
2871.0 r/min
Nitrile rubber (NBR)
0.0726 kg
2175230
552.45 mm
590.55 mm
15.88 mm
519.0 r/min
Nitrile rubber (NBR)
4.07 kg
2175232
552.45 mm
590.55 mm
15.88 mm
519.0 r/min
Nitrile rubber (NBR)
4.07 kg
2175660
552.45 mm
609.6 mm
22.23 mm
519.0 r/min
Nitrile rubber (NBR)
4.17 kg
21787
55.575 mm
77.749 mm
12.7 mm
2820.0 r/min
Nitrile rubber (NBR)
0.0544 kg
21840
55.575 mm
82.575 mm
11.13 mm
2820.0 r/min
Nitrile rubber (NBR)
0.059 kg
21X35X7 CRW1 R
21.0 mm
35.0 mm
7.0 mm
3900.0 r/min
Nitrile rubber (NBR)
0.0068 kg
2200393
558.8 mm
603.25 mm
20.65 mm
513.0 r/min
Carboxylated nitrile rubber (XNBR)
4.14 kg
2200564
558.8 mm
609.6 mm
22.23 mm
513.0 r/min
Carboxylated nitrile rubber (XNBR)
4.17 kg