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      2. Welcome: BOSS Sealing Solutions
        Language: Chinese ∷  English

        Oil Seals

        • DU bush
        DU bush

        DU bush

        • bushing-DU
        • hydraulic bearing
        • Material:steel+PTFE+bronze/
        • Color:Black or red inside
        • Product description: Bushing DU prifile, inside black or red,stainless steel ptfe bearing bushing DU for hydraulic cylinder
        • INQUIRY

        DU bush


        The DU bearing is designed in combination with the working principle of the oil cylinder and shock absorber. It is more wear-resistant in the absence of oil, and is especially suitable for occasions with large lateral forces and frequent reciprocating motion.



        1. PTFE and lipophilic fiber mixture, 0.01-0.03mm
        2. Spherical bronze powder 0.2-0.3mm
        3. Steel back 0.7-2.3mm
        4. Electroplating layer: tin plating thickness 0.005mm, or copper plating thickness 0.008mm

        DU bushing technical data:

        Maximum load pressure: 140N/mm2
        Applicable temperature range: -195~+280 degrees Celsius
        Maximum sliding speed: 3m/s
        Friction coefficient: 0.04~0.20
        Allow the highest PV value (dry): 3.8N/mm2.m/s
        Maximum allowable PV value (oil): 50N/mm2.m/s



        DU bush application

        1. The mixture of PTFE and lipophilic fiber can form a good transfer film, thereby protecting the grinding shaft during the movement.
        2. Good wear resistance and low friction coefficient.
        3. Good running performance, no shaft bite.
        4. Can be used for rotation, swing, reciprocating motion.
        5. Because it does not contain lead, it can be used in food machinery, medical machinery and other green environmental protection equipment.
        6. Also especially suitable for occasions with frequent reciprocating motion and large lateral force. Suitable for cars,Motorcycle shock absorbers and various types of hydraulic cylinders.


        Bush dimensions



        Below dimensions are standard sizes,non-standard sizes available.

        Please request if required.


        d*D*L (mm) d*D*L (mm) d*D*L (mm) d*D*L (mm) d*D*L (mm) d*D*L (mm)
        6*8*6 12*14*6 15*17*10 18*20*12 22*25*25 28*32*15
        6*8*8 12*14*8 15*17*12 18*20*15 22*25*30 28*32*20
        6*8*10 12*14*10 15*17*15 18*20*20 24*27*15 28*32*25
        8*10*6 12*14*12 15*17*20 18*20*25 24*27*20 28*32*30
        8*10*8 12*14*14 15*17*25 20*23*10 24*27*25 28*32*40
        8*10*10 12*14*15 16*18*10 20*23*12 24*27*30 30*34*12
        8*10*12 12*14*20 16*18*12 20*23*15 25*28*10 30*34*15
        8*10*15 12*14*25 16*18*15 20*23*20 25*28*12 30*34*20
        10*12*6 13*15*10 16*18*20 20*23*25 25*28*15 30*34*25
        10*12*8 13*15*20 16*18*25 20*23*30 25*28*20 30*34*30
        10*12*10 14*16*10 17*19*10 22*25*10 25*28*25 30*34*40
        10*12*12 14*16*12 17*19*12 22*25*12 25*28*30 32*36*20
        10*12*14 14*16*15 17*19*20 22*25*15 25*28*40 32*36*30
        10*12*15 14*16*20 18*20*10 22*25*20 25*28*50 32*36*40
        d*D*L (mm) d*D*L (mm)
        35*39*12 80*85*100
        35*39*15 85*90*40
        35*39*20 85*90*60
        35*39*25 85*90*80
        35*39*30 85*90*100
        35*39*40 90*95*40
        35*39*50 90*95*50
        38*42*15 90*95*60
        38*42*30 90*95*80
        38*42*40 90*95*100
        40*44*12 100*105*50
        40*44*20 100*105*60
        40*44*25 100*105*80
        40*44*30 100*105*115
        40*44*40 105*110*60
        40*44*50 105*110*80
        45*50*20 105*110*115
        45*50*25 110*115*60
        45*50*30 110*115*80
        45*50*40 110*115*115
        45*50*50 120*125*60
        50*55*20 120*125*80
        50*55*30 120*125*115
        50*55*40 125*130*60
        50*55*50 125*130*100
        50*55*60 125*130*115
        55*60*30 130*135*60
        55*60*40 130*135*80
        55*60*50 130*135*100
        55*60*60 140*135*60
        60*65*30 140*135*80
        60*65*40 140*135*100
        60*65*50 150*135*60
        60*65*60 150*135*80
        60*65*70 150*135*100
        65*70*30 160*135*60
        65*70*40 160*135*80
        65*70*50 160*135*100
        65*70*60 160*135*115
        65*70*70 180*185*80
        70*75*40 180*185*100
        70*75*50 190*195*80
        70*75*60 190*195*100
        70*75*70 200*205*60
        70*75*80 200*205*80
        75*80*30 200*205*100
        75*80*40 220*225*80
        75*80*50 220*225*100
        75*80*60 250*255*80
        75*80*70 250*255*100
        75*80*80 260*265*80
        80*85*40 260*065*100
        80*85*50 280*285*80
        80*85*60 280*285*100
        80*85*70 300*305*80
        80*85*80 300*305*100



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