JDB/SPB Oilless Bushing

Standard Parts
JDB650 Oilless Cylindrical Bushes (All dimensions in MM)

JDB650 Oilless Cylindrical Bushes

d

D

IDF7

ODm6

L	-0.10
	-0.30

8

10

12

15

16

20

25

30

35

40

50

60

70

80

8

12

8

+0.028
+0.013

12

+0.018
+0.007

081208

081210

081212

081215

10

14

10

14

101408

101410

101412

101415

101420

12

18

12

+0.034
+0.016

18

121810

121812

121815

121816

121820

121825

121830

13

19

13

19

+0.021
+0.008

131910

131915

131916

14

20

14

20

142010

142012

142015

142020

142025

142030

15

21

15

21

152110

152112

152115

152116

152120

152125

152130

16

22

16

22

162210

162212

162215

162216

162220

162225

162230

162235

162240

18

24

18

24

182412

182415

182416

182420

182425

182430

182435

182440

20

28

20

+0.041
+0.020

28

202810

202812

202815

202816

202820

202825

202830

202835

202840

202850

22

32

22

32

+0.025
+0.009

223212

223215

223220

223225

25

33

25

33

253312

253315

253316

253320

253325

253330

253335

253340

253350

253360

30

38

30

38

303812

303815

303820

303825

303830

303835

303840

303850

303860

35

45

35

+0.050
+0.025

45

354520

354525

354530

354535

354540

354550

354560

40

50

40

50

405020

405025

405030

405035

405040

405050

405060

405070

405080

45

55

45

55

+0.030
+0.011

455530

455535

455540

455550

455560

50

60

50

60

506030

506035

506040

506050

506060

506070

506080

Metal Materials

JDB650 material is made of strong cast bronze based metal with special solid lubricants embedded. It basic material is CuZn24Al6. The base metal withstands high load and the solid lubricants provide for self-lubrication. The bearing shows excellent performance without pre-lubrication under conditions of extreme high/lower temperature with low speed. This material provides a maintenance-free bearing solution, particularly for high load, intermittent of oscillating motion.

For special heavy load application, CLI also can supply the strong cast bronze of special high hardness. The material can be up to HB>270, HB>300.

CLI Standard	JDB650	JDB650S1	JDB650S2	JDB650S3	JDB650S5	HGB250
Description	Strong cast bronze	Copper alloy	Copper alloy	Copper alloy	Special strong cast bronze	Cast Iron
Cu%	65	65	85	80	88
Sn%			5		12
Pb%			5
Zn%	25	25	5
Ni%				5
Al%	6	6		10
Fe%				5
Mn%	4	4
Density g/cm³	8.0	8.0	8.8	8.3	8.8	7.3
Hardness HB	> 210	> 180	> 70	> 150	> 80	> 160
Tensile strength N/mm²	> 750	> 550	> 200	> 500	> 360	> 250
Elongation%	> 12	> 12	15	10	> 8
Coefficient of linear expansion	*1.910^-5/°C**	*1.910^-5/°C**	*1.810^-5/°C**	*1.610^-5/°C**	*1.810^-5/°C**	*1.010^-5/°C**
Limit Temp. °C	300	300	400	400	400	400
Max. Load N/mm²	100	80	60	50	70	10
Max. Speed m/min	15	15	10	20	10	15
*Max. PV N/mm²m/min**	200	200	200	200	200	40
400N/mm²	< 0.01	< 0.01	< 0.05	< 0.04	< 0.05	< 0.015

Metal Codes Matching Table

Chinese Code CB1776-87	International Code				Applications
Chinese Code CB1776-87	International ISO1338	Japan Code Jis	USA Code ASTM(UNS)	Germany DIN	Applications
CuZn25Al6FeMn3	CuZn25Al6FeMn3	H5102 CAC304	B30-92 C86300	DIN1709 G-CuZn25A2.0598	High-load、low-speed、general use
CuZn25Al6FeMn3	CuZn25Al6FeMn3	H3102 CAC304	B30-92 C86300	DIN1709 G-CuZn25A2.0598	Super high load、low-speed、high duty
CuAl10Fe3	CuAl10Fe3	H5114 CAC703	B30-92 95800	DIN1714 GB-CuAl10Nl/2.1096	Medium load、medium-speed、general use
CuSn5b5Zn5	QSn5-5-5	H5111 CAC406	B30-92 C83600	DIN1705 G-Cu5n5ZnPb/2.1096	Medium load、medium-speed
DB5675-85 HT250		Fe250	ASTM ciass40		Low-load、low-speed

Solid Lubricants

Lubricant	Features	Typical application
SL1 Graphite + add	Excellent resistance against chemical attacksandIowfriction.Templimit400℃	Suite for general machines and under atmosphere
SL4 PTFE + MOS2 + CF	Lower in friction and good for water lubrication,Temp.limit300℃	Ship, hydraulic turbine, gas turbine etc.

Feature

1.May work without oil for long perlod
2.Extremely high load capacity,good anti-wear and lower friction
3.Particularly appropriate for low speed and high load
4.Suitable for reciprocating,oscillation or Intermittent motion whereoil film is hard to be formed
5.Good chemical resistant and anti-corrosion characteristics
6.can be used in wide range of temperature from -40°c~+300°c

Application

This kind of bearing can be applied under dry, high temperature, high pressure, corrosive, water or other chemical environments when no oil can be introduced.
Now is widely be used in automotive products line, water engineering, dam gate, plastic industries, successive casting machines, steel rollers in metallurgy industry, mineral machines, ships, turbo generators, hydraulic turbines and injection molding machines...

#500SP Solid Lubricats Bearings