SJB300 Ball Screw Jack

Product Detail

SJB300 Ball Screw Jack Details information. 

1. Jack Model: SJB300

2. Screw Diam.: 100mm 

3. Lead : 20mm . Custom high lead 

4. Max lifting load: 150KN

5. Dynamic load rating: 111KN

6. Gear Ratio: 1/10.25, 1/41. Custom other worm gear ratios.

7. Top End: top plate, clevis end, threaded end, plain end , spherical hinge, forked head. 

8: Translating screw, rotating screw, keyed screw configurations in upright or inverted mounting orientation.

9. Power Source: Electric Driven,Manual Operated or Both Are Available

10. Screw Type: Ball screw 

11: Individually or multiple ball screw jack lift system arrangements are available.

12: High speed, high precision, high efficiency, high duty cycle, high performance, high frequency operation, low drive torque, long service life.

SJB300 Ball Screw Jack Specifications:

Maximum lifting Load ( KN )		150	Starting Efficiency ( % )	H	30
Dynamic Load Rating ( KN )		111		L	18
Lifting Screw Diam.( mm )		100
Lead ( mm )		20	Working Efficiency ( % ) at 1500rpm	H	53
Gear Ratio	H	1/10.25		L	35
	L	1/41	Housing Material	Spheroidal graphite iron
Permissible Max. Power ( Kw )	H	7
	L	5.5
Max starting torque full load ( N.m )	H	157	Weight without stroke ( Kg )	125
	L	66.7	Weight per 100mm screw and protective tube( Kg )	7.3

SJB300 Ball Screw Jack Specifications:

SJB300 Screw Jack Lifting Load( KN )
Speed (rpm)	Lifting Speed (mm/s)		300KN				200KN
			H:1/10.25		L:1/41		H:1/10.25		L:1/41
	H:1/10.25	L:1/41	N.m	KW	N.m	KW	N.m	KW	N.m	KW
1400	45.5	11.4	175.68	25.75	66.51	9.75	117.12	17.17	44.34	6.50
900	29.2	7.3	182.57	17.21	70.54	6.65	121.72	11.47	47.03	4.43
700	22.7	5.7	186.22	13.65	75.09	5.50	124.15	9.10	50.06	3.67
500	16.2	4.1	190.03	9.95	80.27	4.20	126.68	6.63	53.51	2.80
300	9.7	2.4	198.11	6.22	83.14	2.61	132.07	4.15	55.42	1.74
100	3.2	0.8	206.92	2.17	86.22	0.90	137.94	1.44	57.48	0.60
50	1.6	0.4	216.54	1.13	89.53	0.47	144.36	0.76	59.69	0.31
Speed (rpm)	Lifting Speed (mm/s)		150KN				100KN
			H:1/10.25		L:1/41		H:1/10.25		L:1/41
	H:10.25	L:1/41	N.m	KW	N.m	KW	N.m	KW	N.m	KW
1400	45.5	11.4	87.84	12.877	33.254	4.875	58.561	8.585	22.170	3.250
900	29.2	7.3	91.29	8.063	35.027	3.324	60.858	5.735	23.513	2.216
700	22.7	5.7	93.11	6.825	37.545	2.752	62.075	4.550	25.030	1.835
500	16.2	4.1	95.01	4.874	40.135	2.101	63.342	3.316	26.756	1.401
300	9.7	2.4	99.06	3.112	41.568	1.306	66.037	2.074	27.712	0.871
100	3.2	0.8	103.46	1.083	43.108	0.451	68.972	0.722	28.738	0.301
50	1.6	0.4	108.27	0.567	29.844	0.156	72.180	0.378	29.844	0.156

SJB300 Ball Screw Jack Dimensions.





1: Jack Brand

SJB: "SIJIE" brand Ball screw jack

2: Load Capacity

300 :  Max. lifting Load is 150KN

Before selecting 300, please check above SJB300 ball screw jack specifications. 

3: Screw Configuration & Mounting Orientation

US: Upright translating screw      UK: Upright keyed screw    UR: Upright rotating screw

IS: Inverted translating screw     IK: Inverted keyed screw    IR: Inverted rotating screw

Note: US,IS(Screw rotation,do axial motion)   UK,IK(Screw anti-rotation,do axial motion)   UR,IR(Screw fixed rotation,traveling nut do axial motion)




4: Screw Top End



5: Worm Shaft Input Types

A: left side worm shaft input.              

B: right side worm shaft input.             

C: double worm shaft input.

M1: left side motor flange direct input.                                       

M2: right side motor flange direct input. 

M3: left side motor flange direct input, right side worm shaft input.                  

M4: right side motor flange direct input, left side worm shaft input.



6: Gear Ratio:                                       

SJB300 ball screw jack gear ratio includes 1/10.25, 1/41

1/10.25: Fast speed, 1.95mm travel length per full turn of worm shaft.                 

1/41: Low speed, 0.488 travel length per full turn of worm shaft. 

7: Travel Stroke



8: Accessories

N: Standard Jack, No additional accessories

P: Steel Cover

R: Rubber Bellow

Y: Hand Wheel

Other accessories, please check below picture