Zhejiang Dernore Intelligent Accessories Technology Co.,Ltd.
JIASHAN B&B ELECTRIC&MACHINERY CO.,LTD
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Home » Products » Metal Bearings» Self-Lubricating Bearings » #50SP1-SL4 Water Lubricated Brass Bearing
#50SP1-SL4

Water Lubricated Brass Bearing

The #50SP1-SL4 water lubricated brass bearing is constructed from high-strength ordinary brass with HB>210 by adoption of state-of-the-art casting technology. It is a type of oil-less bearing inset with water lubricant. Based on working conditions, a certain proportion of holes are drilled on its wear-resistant surface. Mechanical strength of the product is similar to that of #50SP1-SL1.

Features
1. The water lubricated brass bearing is ideal for use at heavy load and low speed.
2. SL-4 lubricant is mainly composed of PTFE, thus featuring superb water lubrication and extremely low coefficient of friction. Operating temperature of SL-4 is less than 300 degrees Celsius.
3. #50SP1-SL4 is particularly suitable for seawater lubrication. For instance, it can be applied in water turbines or ships. Also, it can act as a pharmaceutical machinery bearing or a beverage machine bearing.

Technical Parameters

Material   

  
   Technical
   Chemical

#50SP1-SL1
CuZn25Al6
FeMn3
#50SP1-SL4
CuZn25Al6
FeMn3
#50SP5-SL1
CuZn25Al6
FeMn3
#50HP
CuZn25Al6
FeMn3
#50AB-SL1
CuAl10Ni
#50AB-SL4
CuAl10Ni
#50B
CuSn12
Cu 65 65 65 65 80 80 88
Sn             12
Pb 25 25 25 25      
Zn 6 6 6 6      
Ni         5 5  
Al         10 10  
Fe         5 5  
Mn 4 4 4 4      
Hardness
HB
>180 >180 >235 >250 >150 >150 >80
Tensile strength
N/mm²
>550 >550 >750 >785 >200 >200 >200
Elongation

>12   >12 >10 >10 >8 >8
Coefficient
of expansion
1.9×10-5/℃   1.9×10-5/℃ 1.9×10-5/℃ 1.6×10-5/℃ 1.8×10-5/℃ 1.8×10-5/℃
Limited Temp

300~400   300~400 300~400 400 400 400
Max load
N/mm²
80   100 118 50 70 70
MAX SPEED
M/min
15   15 10 20 10 10
Max PV
N/mm2*m/s
200   200 200 200 200 200
Compression set amount
400 N/mm²
<0.01   <0.01 <0.05 <0.04 <0.05 <0.05