product details

With using the famous TBI ball screw, our ball screw jacks offer higher transmission efficiency, greater speed, longer life and lower noise than Acme screw jacks. Especially suitable for high speed and high frequency operation, the speed up to 6.5m/min.

The ball screw jack is not self-locking and requires an external brake.

SJB-050 Ball Screw Jack Pictures

SJB-050 Ball Screw Jack Specification

Maximum load(KN)		49.0	Gear ratio	H	6
Outer diam. of Screw( mm)		40		L	24
Root diam. of screw( mm )		34.91	Screw travel(mm) per turn of worm shaft	H	1.67
Thread pitch ( mm )		10		L	0.42
Efficiency %	H	64	No-load torque To ( N.m)		1.37
	L	39	Permissible torque of worm ( N.m)		153.9
Permissible max. Power ( KW )	H	2.2	Required torque of worm at max. Load (N.m)	H	21.5
	L	1.0		L	9.6
Permissible max. Input(rpm) when max. load	H	1000	Screw torque N.m, when max. load		86.7
	L	1000	H: High Speed     L: Low Speed

SJB-050 Ball Screw Jack Drawings

        Dust Cover( Bellows )                    Top Plate                                                 Plain End                                     Clevis End 

SJB-050 Ball Screw Jack Ordering Information.

SJB - 050 - US  -  T  -  C -  1/6  - 300   -P
 1        2      3        4      5      6        7      8 

1: Jack Brand

SJB: "SIJIE" brand ball screw jack

2: Load Capacity
050:Max. Load capacity is 49.0KN

Before selecting 050, please check above SJB-050 ball screw jack specifications.

3: Screw Configuration & Mounting Orientation
US: Upright translating screw     UK: Upright screw,Screw anti-rotation    UR: Upright rotating screw
IS: Inverted translating screw     IK: Inverted screw, Screw anti-rotation    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

   T: Top plate     H: Clevis end    S: Thread end     R: Plain end    SH: Spherical hinge  U: Forked head

5: Worm Shaft Input Types
A: right side worm shaft input.              
B: left side worm shaft input.             
C: double worm shaft input.
M1: right side motor flange direct input, left side worm shaft input.                                     
M2: right side motor flange direct input. 
M3: left side motor flange direct input, right side worm shaft input.                  
M4: left side motor flange direct input.

                    A                                                                         B                                                                      C

                          M1                                           M2                                              M3                                            M4

6: SJB-050 ball screw jack gear ratio includes 1/6, 1/24

1/6: Fast speed,1.66mm travel length per full turn of worm shaft.

1/24: Low speed, 0.42mm travel length per full turn of worm shaft

7: Travel Stroke

8:  Accessories

N: Standard Jack, No additional accessories
P: Protective Tube
R: Dust Cover
Y: Hand Wheel
Other accessories,please check below picture