Name: JW Series Screw Jacks
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JW Series Screw Jacks

JWM Type (Trapezoidal Screw Type) Low Speed, Low Frequency
JWM Type (Trapezoidal Screw Type) is suitable for low-speed, low-frequency applications. Main components include: precision trapezoidal screw pairs and high-precision worm gear pairs.
Economical: Compact structure, simple operation, and easy maintenance.
Low speed, low frequency: Primarily used for heavy loads, low-speed operations, and non-frequent working environments.
Load holding: The trapezoidal screw features self-locking capability, maintaining load even without braking devices.
*Under significant vibration or impact loads, the self-locking function may occasionally fail, requiring additional braking devices.
JWB Type (Standard Ball Screw Type) High Speed, High Frequency
JWB Type (Standard Ball Screw Type) is designed for high-speed, high-frequency, and high-performance applications. Main components include: precision ball screw pairs and high-precision worm gear pairs.
High efficiency: Utilizes rolling friction to improve overall efficiency, requiring minimal drive input to generate substantial thrust.
High-speed operation: Compared to trapezoidal screws, it offers significantly higher speeds, enabling smooth and rapid movement.
Extended service life: High-quality ball screws increase operational lifespan by 3 times or more.
Note: ①No inherent self-locking function; external brakes or drives with braking capability are required.
②For JWH Type (Large Lead Ball Screw Type), please inquire separately.

+86 188 8822 2133

+86 182 6300 7605

Overview

JWM type (trapezoidal screw type)

The low-speed, low-frequency JWM type (trapezoidal screw type) is suitable for low-speed, low-frequency occasions. Its main components are: precision trapezoidal screw pair and high-precision worm gear pair.

Economical: compact structure, simple operation and easy maintenance.

Low speed, low frequency: mainly used in places with heavy load, low speed and infrequent work.

Hold the load: The lead screw has an automatic locking function, which can hold the load even without a brake device.

*When subjected to large vibrations or impact loads, the self-locking function may occasionally fail, and an external braking device is required.

JWB type (ordinary ball screw type)

High-speed, high-frequency JWB type (ordinary ball screw type) is suitable for high-speed, high-frequency and high-performance devices. Its main components are precision ball screw pairs and high-precision worm gear pairs.

High efficiency Rolling friction is used to improve the efficiency of the whole machine. Only a small driving source is needed to generate a large driving force.

High speed Compared with trapezoidal screw, the speed is greatly improved, and it can run easily and at high speed.

Long service life The use of high-quality ball screws can increase its service life by more than 3 times.

Note: ① It has no self-locking function and needs an external braking device or a driving source with braking.

②JWH large pitch ball screw type, please consult separately.

Machine assembly shape and features

Basic form (US, DS)

The nut turns the screw rod to move up and down. This is a common lift assembly.

US: On DS: Down

*Please select the appropriate lift (upward or downward) according to the load direction and installation direction.

*When the screw shaft is raised or lowered, it will generate rotational force, so measures must be taken to prevent rotation.

Anti-rotation structure (UM, DM)

UM: Up 1 DM: Down

It is suitable for situations where the top is running without a connection or the rope is pulled by a pulley and rotation cannot be prevented.

Please select the appropriate lift (UM or DM) according to the load direction and installation direction.

Movable nut structure (UR, DR)

Generally speaking, the lift must have the stroke generated by the lifting of the screw shaft and the space required by the screw cover. If you want to increase the stroke in a limited space, this movable nut structure is very suitable (the screw shaft rotates and the movable nut moves). The top of the screw shaft is cylindrical, so when the stroke is long, a support method is used at the shaft end to obtain a good transmission effect.

UR: Upward DR: Downward

Please select the appropriate lifter (pressing up or hanging down) according to the load direction and installation direction. Note: In the selection and model indication method, the placement direction of the nut must also be indicated.

JWM (trapezoidal screw type) basic parameters list

model		JWM0002	JWM005	JWM010	JWM025	JWM050	JWM100	JWM150	JWM200	JWM300	JWM500	JWM750	JWM1000
Maximum load KN		1.96	4.90	9.80	24.5	49.0	98.0	147	193	294	490	735	980
Screw outer diameter mm		12	16	20	26	40	50	55	65	85	120	130	150
Screw bottom diameter mm		8.8	10.8	14.8	19.7	30.5	38.4	43.4	49.3	67	102	112	127
Screw pitch mm		2	4	4	5	8	10	10	12	16	16	16	20
Reduction ratio	H Speed	5	5	5	6	6	8	8	8	103	103	103	12
Reduction ratio	L speed	20	20	20	24	24	24	24	24	32	32	32	36
Overall efficiency%	H Speed	26	26	21	21	22	22	20	20	19	15	13	13
Overall efficiency%	L speed	15	15	12	12	14	15	14	13	11	10	8	8
Allow input Maximum power(kw)	H Speed	0.16	0.39	0.49	1.0	2.0	2.8	3.1	5.0	8.4	13.4	14.4	21.4
Allow input Maximum power(kw)	L speed	0.08	0.18	0.36	0.46	0.63	1.4	2.2	3.2	4.6	5.7	7.2	9.4
No-load torque(kw)		0.11	0.11	0.29	0.62	1.4	2.0	2.6	3.9	9.8	19.6	29.4	39.2
Allowable input shaft torque (N m)*		9.8	9.8	19.6	49.0	153.9	292.0	292.0	292.0	735.0	1372.0	1764.0	2450.0
Required input shaft torque at maximum load (N m)**	H Speed	0.83	2.5	6.2	16.1	48.7	90.7	149.0	238.1	400.1	856.0	1380.5	2040.9
Required input shaft torque at maximum load (N m)**	L speed	0.42	1.1	2.9	7.4	20.0	45.3	72.3	124.0	244.0	453.0	761.3	1278.3
The axial displacement of the lead screw (movable nut) is the amount of displacement when the input shaft rotates one circle.	H Speed	0.60	0.8	0.80	0.83	1.33	1.25	1.25	1.50	1.50	1.50	1.50	1.67
	L speed	0.15	0.20	0.20	0.21	0.33	0.42	0.42	0.50	0.50	0.50	0.50	0.56
Allowable input shaft rotation speed at maximum load	H Speed	1800	1500	750	600	400	300	200	200	200	150	100	100
Allowable input shaft rotation speed at maximum load	L speed	1800	1500	1200	600	300	300	290	250	180	120	90	70
Screw torque at maximum load (N·m)		2.6	8.6	20.1	65.1	201.5	503.6	813.2	1287.7	2531.9	5551.3	8921.8	13878.3

The value of the no-load idling torque.

JWB (ordinary ball screw) basic parameters list

	Lift Model	JWB010	JWB025	JWB050		JWB100	JWB150		JWB200☆		JWB300☆		JWB500☆
Maximum static load (KN)		9.8	24.5	49		98	147		196		294		490
Maximum dynamic load (KN)			——	48		60	60	71	67	114	73	129	143
Screw outer diameter (mm)		20	25	32	40☆	50	50	50☆	63	63	80	80	100
Screw pitch(mm)		5	10	10	10☆	10	10	20☆	10	20	10	20	20
Elevator speed ratio	H Speed	5	6	6		8	8		8		10.67		10.67
	L speed	20	24	24		24	24		24		32		32
Overall efficiency(%)	H Speed	61	62	64		63	63		62		56		60
	L speed	34	35	39		43	43		41		34		38
Maximum allowable input power(KW)	H Speed	0.54	1.3	2.2		3.6	4		5.5		8.9		13.3
	L speed	0.27	0.63	1		1.9	2.1		2.8		4.1		6.5
Maximum allowable input torque(Nm)		19.6	49	153.9		292	292		292		735		1372
Input torque required at maximum load(Nm)	H Speed	2.8	9	21.5		39.1	77		104.5		169.6		317.5
	L speed	1.4	4.3	9.6		20.4	39.6		54.2		98.5		177.9
Input shaft lead per revolution(	H Speed	1	1.67	1.67 1.67		1.25	1.25	2.5	1.25	2.5	0.94	1.87	1.87
Ball screw) axial displacement(mm)	L speed	0.25	0.42	0.42 0.42		0.42	0.42	0.83	0.42	0.83	0.31	0.625	0.625
Maximum allowable input speed at full load (r/min)	H Speed	1500	1400	1000		890	500	300	500	300	500	400	400
	L speed	1500	1400	1000		890	500	300	500	300	400	350	350
Screw return torque at maximum load(Nm)		8.7	34.7	86.7		208.2	416.3		555.1		1040.9		2081.7

You need to communicate with the manufacturer's technical department before ordering

JWB300/JWB500 are for reference only and can be customized

◎When the maximum axial load applied to the ball screw is Fmax, select the rated dynamic load Cao>Caom=fsFmax fs is generally 1.2-2C when there is impact vibration 1.5-3C

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