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  • JDB Solid-Lubricant-Embedded Bearing

    SLT-JDB-1 soIid lubricant embedded bushing is a new type made from strong brass and homogeneousIy embedded with solid lubricant in its body. It breaks through the limit of general bearing whose lubrication depends on oil film. So it is suitable for high temperature. heavy load, anti-corrosion, or where oiI is hard to be introduced. It is performance doubles both on hardness and wear-friction. It is now widely applied in successive casting machines, steel rollers in metallography, mineral machine, ships, steam turbine, and injection molding machines for plastics.

    SLT-JDB-2 suitable for low load position, wear performance worsens greatly when under middle or high load, it can be applied in furnace door linage, furnace, conveyor, tool machines, light industries, etc.

    SLT-JDB-3 suitable for low load position wear performance worsens when under middle or high load. The mating layer is same as JDB-2 so that more cost-saving than JDB-2 whereas compression strength increases and weldable. Most suitable for dry position in construction machinery, metallurgical machines, conveyor machines etc.

    SLT-JDB-4 very good performance when under low load. Not suitable for middle and high load. A typical cost saving material. Can substitute JDB-4 to be applied in the position without high requirements such as die guider, plastic injection machines etc.

    SLT-JDB-5 can be used under low speed rotation, middle and high load. Due to its super high hardness, when under high load, it over performs than other JDB type. Not suitable for water. Acid, aIkaIi circumstances. Most suitable for the supporting position of hoisting machine,e,g. Bulldozer supporter, hoister supporter, Crane supporter etc．

  • Structure & application

    Structure bearings

    "Rhesent" solid lubricant bearings are produced based on the high-intensity bronze alloy with orderly arranged pores of appropriate size to contain solid lubricants.

    This kind of bearing have good wear resistance, low friction, work without any oil for long period. It widely applies in the water conservancy project machinery, like dam gate bushes, tightening pulley sliding bearing, hydraulic turbine bushes, contruction machinery, bridge, chemical industry, metallurgy, petroleum, ship and has become the stereotypia product in each kind of project machinery. To meet the requirments of the customers and to suit more applications, our company developed with the substrate material bearing for selected.

    Civil Projection

    Suitable for medical machines, textile machines and sport machines, transportation machines, transmission equipments, electronic products and agriculture industries, etc. As a result of this products fine material behavior, decided the "Rhesent" product suited the more used situation, is better than other similar products.

    The performance of the bronze alloy
    Standard Strong cast bronze strong cast bronze strong cast bronze
    Cu％ 65 65 65
    Zn％ 25 25 25
    Al％ 6 6 6
    Mn％ 4 4 4
    Hardness HB ≥ 210 ≥ 250 ≥ 290
    Tensile strength N/mm2 > 750 > 800 > 500
    Elongation ％ > 12 > 4 > 0.5
    Max. Load N/mm2 100 150 200
    Max. Speed m/min 60 15 10
    300N/mm2 < 0.01 < 0.005 < 0.002


    Metallurgical structure of the high-strength copper

    The high strength copper belongs to α&β' bidirectional copper . Its intensity and hardness very high. They are widely used for to manufacture the high strength structural element, with machine in axel sleeve and slide.

    Metallurgical structure of the high-strength copper

     
    Wearing and abrasion performance of the bearings
    Dimension Hardness Glide speed Unit Pressure Swing angle Symmetry axis Test timeL Lubrication
    ø40 × ø50 × L30 > 210HB V=1.0m/min
    ( 0.0166m/s )    		 P=250Kgf/cm
    (24.5N/mm)    		 α=90°
    ( ±45° )    		 45#
    HRC42-45R 0.8    		 50 hour Dry

  • Installation Attention

    To keep the bushing, housing dean before installing.

    The outside surface be covered a little grease or oil during installing, which help the process. And please do not use too much.

    The bushing should be pushed into housing slowly with mandrel (oil push machine is recommended), it is for hidden to hammer the part directly.

    We need your instructions if the housing wall is thin or made from soft metal in order not to destroy it.

    Zn order to simply the installment and keep the working layer, we recommend that the shaft should own chamfer and HRC45/RZZ-3. Gr plating layer is allowed.

    Grease and Oil are recommended in order to shorten the mending.

    bushing Installation Attention
    Checking Method

    OD, checked by ring gauge with GO/NO GO

    ID, checked by plug gauge with GO/NO GO. The common wrapped bushing satisfy tolerance H9.

    The size of ring gauge & plug gauge are in comply with DIN1494 part 1.

  • Mating Tolerance

    Shaft Tolerance (ISO)
    ≥ < c9 d8 e7 e8 f7 g6 h5 h6 h7 h8 js6 js7 k6 m6 n6 p6 p7 r6 s6
    —
    		 3 -60
    -85     		-20
    -34    		 -14
    -24     		-14
    -28     		-6
    - 16    		 -2
    -8     		0
    -4     		0
    -6     		0
    -10     		0
    -14     		±3 ±5 +6
    0     		+8
    +2     		+10
    +4     		+12
    +6     		+16
    +6    		 +16
    +10     		+20
    +14
    3 6 -70
    -100     		-30
    -48     		-20
    -32     		-20
    -38     		-10
    -22     		-4
    -12     		0
    -5     		0
    -8     		0
    -12     		0
    -18     		±4 ±6 +9
    +1     		+12
    +4     		+16
    +8     		+20
    +12     		+24
    +12     		+23
    +15     		+27
    +19
    6
    		 10
    		 -80
    -116    		 -40
    -62    		 -25
    -40     		-25
    -47     		-13
    -28     		-5
    -14     		0
    -6     		0
    -9     		0
    -15     		0
    -22     		±4.5 ±7 +10
    +1     		+15
    +6     		+19
    +10     		+24
    +15     		+30
    +15     		+28
    +19     		+32
    +23
    10
    		 18
    		 -95
    -138     		-50
    -77     		-32
    -50     		-32
    -59     		-16
    -34     		-6
    -17     		0
    -8     		0
    -11     		0
    -18     		0
    -27     		±5.5 ±9 +12
    +1    		 +18
    +7     		+23
    +12     		+29
    +18     		+36
    +18     		+34
    +23     		+39
    +28
    18 24 -110
    -162     		-65
    -98     		-40
    -61     		-40
    -73     		-20
    -41     		-7
    -20     		0
    -9     		0 -13 0
    -21     		0
    -33     		±6.5 ±10 +15
    +2     		+21
    +8     		+28
    +15     		+35
    +22     		+43
    +22     		+41
    +28     		+48
    +35
    24 30
    30 40 -120
    -182    		 -80
    -119    		 -50
    -75     		-50
    -89     		-25
    -50     		-9
    -25     		0
    -11     		0
    -16     		0
    -25     		0
    -39     		±8 ±12 +18
    +2     		+25
    +9     		+33
    +17     		+42
    +26     		+51
    +26     		+50
    +34     		+59
    +43
    40 50 -130
    -192
    50 65 -140
    -214    		 -100
    -146     		-60
    -90     		-60
    -106     		-30
    -60     		-10
    -29     		0
    -13     		0
    -19     		0
    -30     		0
    -46     		±9.5 ±15 +21
    +2     		+31
    +11     		+39
    +20     		+51
    +32     		+62
    +32     		+60
    +41     		+72
    +53
    65 80 -150
    -224    		 +62
    +43     		+78
    +59
    80 100 -170
    -257    		 -120
    -174     		-72
    -107     		-72
    -126     		-36
    -71     		-12
    -34     		0
    -15     		0
    -22     		0
    -35     		0
    -54     		±11 ±17 +25
    +3    		 +35
    +13     		+45
    +23     		+59
    +37     		+72
    +37     		+73
    +51     		+93
    +71
    100 120 -180
    -267    		 +76
    +54     		+101
    +79
    120 140 -200
    -300    		 -145
    -208     		-85
    -125     		-85
    -148     		-43
    -83    		 -14
    -39     		0
    -18     		0
    -25     		0
    -40     		0
    -63     		±12.5 ±20 +28
    +3     		+40
    +15     		+52
    +27     		+68
    +43     		+83
    +43     		+88
    +63     		+117
    +92
    140 160 -210
    -310    		 +90 +65 +125
    +100
    160 180 -230
    -330    		 +93
    +68     		+133
    +108
    180 200 -240
    -355    		 -170
    -242    		 -100
    -146     		-100
    -172     		-50
    -96     		-15
    -44     		0
    -20     		0
    -29     		0 -46 0
    -72     		±14.5 ±23 +33
    +14     		+46
    +17     		+60
    +31     		+79
    +50     		+96
    +50     		+106
    +77     		+151
    +122
    200 225 -260
    -375    		 +109
    +80     		+159
    +130
    225 250 -280
    -395    		 +113
    +84     		+169
    +140
    250 280 -300
    -430    		 -190
    -271    		 -110
    -162     		-110
    -191     		-56
    -108     		-17
    -49     		0
    -23     		0 -32 0
    -52     		0
    -81     		±16 ±26 +36
    +4     		+52
    +20     		+66
    +34     		+88
    +56     		+108
    +56     		+126
    +94     		+190
    +158
    280 315 -330
    -460    		 +130
    +98     		+202
    +170
    315 355 -360
    -500    		 -210
    -299     		-125
    -182     		-125
    -214     		-62
    -119     		-18
    -54     		0
    -25     		0
    -36     		0
    -57     		0
    -89     		±18 ±28 +40
    +4     		+57
    +21     		+73
    +37     		+98
    +62     		+119
    +62     		+114
    +108     		+226
    +190
    355
    		 400
    		 -400
    540     		+105
    +114     		+224
    +208
    400 450 -440
    -540    		 -230
    -327     		-135
    -198     		-135
    -232     		-68
    -131     		-20
    -60     		0
    -27     		0
    -40     		0
    -63     		0
    -97     		±20 ±31 +45
    +5     		+63
    +23     		+80
    +40     		+108
    +68     		+131
    +68     		+166
    +126     		+272
    +232
    450 500 -480
    -635     		+172
    +132     		+292
    +252

     

     

    Housing Tolerance (ISO)
    ≥ < B10 C9 D8 E7 E8 F7 G7 H6 H7 H8 JS7 K7 M7 N7 P7 R7 S7 T7
    —
    		 3 +180
    +140     		+85
    +60     		+34
    +20     		+24
    +14     		+28
    +14     		+16
    +6     		+12
    +2     		+6
    0    		 +10
    0     		+14
    0    		 ±5 0
    -10     		-2
    -12    		 -4
    -14    		 -6
    -16    		 -10
    -20     		-14
    -24     		—
    3 6 +188
    +140     		+100
    +70     		+48
    +30     		+32
    +20     		+38
    +20     		+22
    +10     		+16
    +4     		+8
    0    		 +12
    0     		+18
    0     		±6 +3
    -9     		0
    -12     		-4
    -16    		 -8
    -20    		 -11
    -23     		-15
    -27     		—
    6 10 +208
    +150     		+116
    +80     		+62
    +40     		+40
    +25     		+47
    +25     		+28
    +13     		+20
    +5     		+9
    0    		 +15
    0     		+22
    0     		±7 +5
    -10    		 0
    -15     		-4
    -19     		-9
    -24    		 -13
    -28     		-17
    -32     		—
    10 14 +200
    +150     		+138
    +95     		+77
    +50     		+50
    +32     		+59
    +32     		+34
    +16     		+24
    +6     		+11
    0     		+18
    0     		+27
    0     		±9 +6
    -12     		0
    -18     		-5
    -23    		 -11
    -29     		-16
    -34     		-21
    -39     		—
    14 18
    18 24 +244
    +160     		+162
    +110     		+98
    +65     		+61
    +40     		+73
    +40     		+41
    +20     		+28
    +7     		+13
    0     		+21
    0     		+33
    0     		±10 +6
    -15     		0
    -21     		-7
    -28    		 -14
    -35    		 -20
    -41     		-27
    -48     		—
    24 30 -33
    -54
    30 40 +270
    +170     		+182
    +120     		+119
    +80     		+75
    +50     		+89
    +50     		+50
    +25     		+34
    +9     		+16
    0    		 +25
    0     		+39
    0     		±12 +7
    -18     		0
    -25     		-8
    -33     		-17
    -42     		-25
    -50     		-34
    -59     		-39
    -64
    40 50 +280
    +180    		 +192
    +130     		-45
    -70
    50 65 +310
    +190     		+214
    +140     		+146
    +100     		+90
    +60     		+106
    +60     		+60
    +30     		+40
    +10     		+19
    0     		+30
    0    		 +46
    0    		 ±15 +9
    -21     		0
    -30     		-9
    -39    		 -21
    -51     		-30
    -60     		-42
    -72     		-55
    -85
    65 80 +320
    +200     		+224
    +150     		-32
    -62     		-48
    -78     		-64
    -94
    80 100 +360
    +220     		+257
    +170     		+174
    +120     		+107
    +72     		+125
    +72     		+71
    +36     		+47
    +12     		+22
    0     		+35
    0     		+54
    0     		±17 +10
    -25     		0
    -35     		-10
    -45     		-24
    -59     		-38
    -73     		-58
    -93     		-78
    -113
    100 120 +380
    +240     		+267
    +180     		-41
    -76     		-66
    -101     		-91
    -126
    120 140 +420
    +260     		+300
    +200     		+208
    +145     		+125
    +85     		+148
    +85     		+83
    +43     		+54
    +14     		+25
    0     		+40
    0     		+63
    0    		 ±20 +12
    -28     		0
    -40     		-12
    -52     		-28
    -68     		-48
    -88     		-77
    -117    		 -107
    -147
    140 160 +440
    +280     		+310
    +210     		-50
    -90     		-85
    -125     		-119
    -159
    160 180 +470
    +310     		+330
    +230    		 -53
    -93     		-93
    -133     		-131
    -171
    180 200 +525
    +340     		+355
    +240     		+242
    +170     		+146
    +100     		+172
    +100     		+96
    +50     		+61
    +15     		+29
    0     		+46
    0     		+72
    0     		±23 +13
    -33    		 0
    -46     		-14
    -60    		 -33
    -79     		-60
    -106     		-105
    -151     		-149
    -195
    200 225 +565
    +380     		+375
    +260     		-63
    -109     		-113
    -159     		-163
    -209
    225 250 +605
    +420     		+395
    +280     		-67
    -113     		-123
    -169     		-179
    -225
    250 280 +690
    +480     		+430
    +300     		+271
    +190     		+162
    +110     		+191
    +110     		+108
    +56     		+69
    +17     		+32
    0     		+52
    0     		+81
    0     		±26 +16
    -36     		0
    -52     		-14 -66 -36
    -88     		-74
    -126     		-138
    -190     		-198
    -250
    280 315 +750
    +540     		+460
    +330     		-78
    -130     		-150
    -202     		-220
    -272
    315 355 +830
    +600     		+500
    +360     		+299
    +210     		+182
    +125    		 +214
    +125     		+119
    +62     		+75
    +18     		+36
    0     		+57
    0     		+89
    0    		 ±28 +17
    -40     		0
    -57     		-16
    -73     		-41
    -98     		-87
    -144     		-169
    -226     		-247
    -304
    355 400 +910
    +680     		+540
    +400     		-93
    -150     		-187
    -244     		-273
    -330
    400 450 +1010
    +760     		+595
    +440     		+327
    +230     		+198
    +135     		+232
    +135     		+131
    +135     		+83
    +20     		+40
    0     		+63
    0     		+97
    0     		±31 +18
    -45     		0
    -63     		-17
    -80    		 -45
    -108     		-103
    -166     		-209
    -272     		-307
    -370
    450 500 +1090
    +840     		+635
    +480     		-109
    -172     		-229
    -292     		-337
    -400