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JDB-4 Cast-Iron Embedded Bush

JDB-4 Cast-Iron Embedded Bush

Application：

JDB-4 is based on cast irom HT250 and embedded with solid lubricant.Very good performance when under low load. Not suitable for middle and high load.

  TECHNICAL DATE-- 1

Max. Load	Static	250N/m㎡		Temp		-100℃~＋300℃
	Dynamic	100N/m㎡		max linear velocity	dry friction	0.3m/s
					liquid lubrication	1.0m/s
Max.PV		1.65N/m㎡.m/s		Thermal conductivity		60W(m﹡K)﹣1
		19x10-6K-1		Friction coefficient		0.03~0.20
Tensile strength		750N/m㎡		Hardness		HB>=210
				Elongation		12%

Type	JDB-1	JDB-2	JDB-3	JDB-4	JDB-5
Base material	CuZn24Al6	CuSn6Zn6Pb3	CuSn6Zn6Pb3	FC/HT-250	CuCr15
Base Hardness	Hb230 (Hb270)	HB 90	HB 80	HB 210	HB 60
Friction coef(u)	<0.16	<0.15s	<0.14	<0.17	<0.17
Temperature limit	300℃	350℃	300℃	400℃	350℃
Dynamic Load Limit	100 N/mm^2	60 N/mm^2	70 N/mm^2	60 N/mm^2	250 N/mm^2
Load LImit Under 1m/min	25 N/mm^2	15 N/mm^2	20 N/mm^2	15 N/mm^2	70 N/mm^2
Speed limit	干 0.40 m/s 油 5 m/s	2 m/s	2 m/s	0.5 m/s	0.1 m/s
PV Limt	3.8 N/mm^2·m/s	0.5 N/mm^2·m/s	0.6 N/mm^2·m/s	0.8 N/mm^2·m/s	2.5 N/mm^2·m/s

JDB Wear Performance

Load Applied		62N/mm2		24.5N/mm2		14.7N/mm2
Item		Wear Depth	Time	Wear Depth	Time	Wear Depth	Time
Type	Lubrication	(mm)	(hrs)	(mm)	(hrs)	(mm)	(hrs)
CuSn6Zn6Sn3	Oil	0.098	10	0.125	100	0.10	100
JDB-1	dry friction	0.075	100	0.015	100	0.012	100
JDB-2	dry friction	0.025	30	0.065	100	0.025	100
JDB-3	dry friction	0.03	30	0.12	100	0.015	100
JDB-4	dry friction	0.03	10	0.25	20	0.011	100
JDB-5	dry friction	0.022	100	.0.13	100	0.01	100

Lubricant	Features	Typicalapplication
"SL1 Graphite+add "	"Excellentresistanceagainstchemical attacksandIowfriction.Templimit400℃"	"Suiteforgeneralmachinesand underatmosphere "
SL4+MOS2	"Lowerinfrictionandgoodforwater lubrication,Temp.limit300℃ "	"Suiteforwater/sealubrication,like ship,hydraulicturbine,gasturbineetc. "
PTFE+MOS2+CF

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