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
35X45X7 HMS5 RG
35.0 mm
45.0 mm
7.0 mm
3480.0 r/min
Nitrile rubber (NBR)
0.0083 kg
35X48X8 HMSA10 V
35.0 mm
48.0 mm
8.0 mm
11580.0 r/min
Fluoro rubber (FKM)
0.0143 kg
35X49X6 HMSA10 V
35.0 mm
49.0 mm
6.0 mm
11580.0 r/min
Fluoro rubber (FKM)
0.0115 kg
35X50X10 HMSA10 V
35.0 mm
50.0 mm
10.0 mm
11580.0 r/min
Fluoro rubber (FKM)
0.0186 kg
35X50X7 HMS5 RG
35.0 mm
50.0 mm
7.0 mm
3480.0 r/min
Nitrile rubber (NBR)
0.0124 kg
35X50X8 HMSA10 V
35.0 mm
50.0 mm
8.0 mm
11580.0 r/min
Fluoro rubber (FKM)
0.016 kg
35X52X10 HMS5 RG
35.0 mm
52.0 mm
10.0 mm
3480.0 r/min
Nitrile rubber (NBR)
0.0177 kg
35X52X7 HMSA10 V
35.0 mm
52.0 mm
7.0 mm
11580.0 r/min
Fluoro rubber (FKM)
0.0156 kg
35X52X8 CRWA1 P
35.0 mm
52.0 mm
8.0 mm
5000.0 r/min
Polyacrylate elastomer (ACM)
0.0136 kg
35X52X8 HMSA10 V
35.0 mm
52.0 mm
8.0 mm
11580.0 r/min
Fluoro rubber (FKM)
0.017 kg
35X54X7 CRW1 R
35.0 mm
54.0 mm
7.0 mm
3480.0 r/min
Nitrile rubber (NBR)
0.019 kg
35X55X10 HMS5 RG
35.0 mm
55.0 mm
10.0 mm
3480.0 r/min
Nitrile rubber (NBR)
0.0225 kg
35X55X10 HMSA10 RG
35.0 mm
55.0 mm
10.0 mm
3480.0 r/min
Nitrile rubber (NBR)
0.0226 kg
340X385X20 HSS4 H
340.0 mm
385.0 mm
20.0 mm
843.0 r/min
Hydrogenated nitrile rubber (HNBR)
0.53 kg
3425560
869.95 mm
920.75 mm
22.23 mm
329.0 r/min
Nitrile rubber (NBR)
6.3 kg
34256
87.325 mm
107.92 mm
9.53 mm
2220.0 r/min
Nitrile rubber (NBR)
0.0535 kg
34283
87.325 mm
114.33 mm
11.13 mm
2220.0 r/min
Nitrile rubber (NBR)
0.108 kg
34336
87.325 mm
117.5 mm
11.13 mm
2220.0 r/min
Nitrile rubber (NBR)
0.118 kg
3475562
882.65 mm
933.45 mm
22.23 mm
325.0 r/min
Nitrile rubber (NBR)
6.36 kg
34848
88.9 mm
104.78 mm
6.35 mm
2185.0 r/min
Nitrile rubber (NBR)
0.0299 kg
34857
88.9 mm
107.92 mm
11.13 mm
6780.0 r/min
Fluoro rubber (FKM)
0.0893 kg
34866
88.9 mm
111.15 mm
9.53 mm
6780.0 r/min
Fluoro rubber (FKM)
0.0589 kg
34889
88.9 mm
114.33 mm
11.13 mm
2160.0 r/min
Nitrile rubber (NBR)
0.102 kg
34X48X8 CRW1 R
34.0 mm
48.0 mm
8.0 mm
3540.0 r/min
Nitrile rubber (NBR)
0.0136 kg