Cubic Worm Gear Screw Jack

Product Overview

Candy Cubic Worm Screw Jack features a comprehensive line of worm gear jacks. These cubic-style worm screw jacks are available in three versions: Translating, Keyed, and Rotating, each with a number of possible configurations and options. Candy Cubic Worm Screw Jack is the solution for a wide variety of industrial lifting, lowering and pushing applications.

Technical Data

Rate of Travel

Travel is determined by the ratio of the worm gear screw jack, the standard ratio, N, produces 1mm of travel per one revolution of the input shaft, or worm. An input speed of 1,500 rpm equals 1,500mm of travel per minute. Maximum input shaft speed is 1,800 RPM. The alternative ratio, L, produces 0.25mm of travel for each revolution of the input shaft. Based on an input shaft speed of 1,500 rpm, this ratio produces a linear speed of 375mm per minute.

Tolerances and Backlash

• Trapezoidal screw end play is 0.15mm
• Radial play is 0.2mm
• Lifting screw outer diameter and sleeve diameter free tolerance is 0.2mm
• Worm shaft and gear play is ± 3 degrees for ratio N, and ± 5 degrees for ratio L

Lateral Force

Lateral force will reduce the working life of the screw jack and can lead to product failure. The screw jack(s) should be isolated from lateral forces via the use of guide rails. A Rotating or Traveling Nut-Type worm gear screw jack must be used in single jack applications with no external guiding.

Self-Locking Function

Trapezoidal type screws are typically self locking. This function, however, depends on a variety of parameters, including, but not limited to screw pitch, screw jack ratio, lubrication, vibration, mounting position, etc. A brake or brake-motor may be required to guarantee holding position, please consult Candy Controls during the design process. A brake is recommended for all applications involving vibration.

Stop Collar

Following a customer’s requirement, screw jacks may be fitted with a stop collar to prevent the screw from being removed from the gearbox. A stop collar is not to be used as a fixed stop.

Working Temperatures

Normal operating conditions are -20ºC to 80ºC. Please consult Candy Controls for applications that require temperatures outside this range.

Lubrication

Worm gear screw jacks are shipped from the factory with our standard NLGI Grade 2 grease. Recommended lubrication maintenance is recommended after the first 300 hours of use, and then every 1,000 hours of use thereafter.

FAQ

Q: What is the difference between a trapezoidal worm gear screw jack and a ball screw jack?
A: The trapezoidal screw jack uses a threaded acme screw that is typically self-locking, meaning it will hold its position without a brake. Ball screw jacks incorporate ball screws to convert rotary motion to linear movement. Ball screw jacks are inherently more efficient, requiring 1/3 the horsepower compared to trapezoidal worm gear jacks. Due to the efficiency of a ball screw jack, a brake must be used to stop and hold a load in position.

Q: What is a Translating or Keyed-Type Screw Jack?
A: This type of jack has a key fixed to the jack housing and inserted into a keyway milled into the lifting screw which forces the screw to translate through the gearbox housing without rotating.

Q: What is a Rotating or Traveling Nut-Type Screw Jack?
A: This design incorporates a lifting screw keyed to the worm gear as a single unit, forcing the lifting screw to rotate in the gearbox, but not translate. A traveling nut, running onthe rotating screw generates linear motion for the attached load. This type of jack is ideal for applications that cannot accommodate a screw protection tube.

Q: Which type of screw jack is best for a single jack system?
A: In a single jack application, with no guide rails to isolate lateral load, a Rotating or Keyed screw jack must be used. Multiple jack applications, or single jack applications that are fully guided may use Translating or Keyed-Type screw jacks.

Q: Can a screw jack be operated in multiple unit systems:
A: Yes, screw jacks may be easily configured in systems, motorized and manual, to raise and lower a load in unison.

Q: Can a worm gear screw jack be operated at high speed?
A: Input power should not exceed the KW rating in specification tables. Maximum gearbox speed should not exceed 1,800 rpm.

Specification Overview

MODEL NUMBER	MAX STATIC LOAD (Kn) - (LBS. Force)	MAX DYNAMIC LOAD (Kn) - (LBS. Force)	SCREW DIAMETER (MM)	SCREW PITCH (MM)	AVAILABLE RATIOS	TRAVEL STOKE/TURN (LOW - HIGH RATIO)	MAX STROKE (MM)
CSJ 016	1 - 224	1 - 224	16	4	4:1 16:1	1 - .25 (MM)	200
CSJ 018	5 - 1,124	5 - 1,124	18	4	4:1 16:1	1 - .25 (MM)	400
CSJ 020	10 - 2,248	10 - 2,248	20	4	4:1 16:1	1 - .25 (MM)	750
CSJ 030	20 - 4,496	20 - 4,496	30	6	6:1 24:1	1 - .25 (MM)	1400
CSJ 040	50 - 11,240	50 - 11,240	40	7	7:1 28:1	1 - .25 (MM)	1500
CSJ 055	80 - 17,984	80 - 17,984	55	9	9:1 36:1	1 - .25 (MM)	2500
CSJ 060	150 - 33,721	150 - 33,721	60	9	9:1 36:1	1 - .25 (MM)	3000
CSJ 070	200 - 44,961	200 - 44,961	70	10	10:1 40:1	1 - .25 (MM)	5000
CSJ 080	250 - 56,202	250 - 56,202	80	10	10:1 40:1	1 - .25 (MM)	6000
CSJ 100	350 - 78,683	350 - 78,683	100	10	10:1 40:1	1 - .25 (MM)	6500
CSJ 120	500 - 112,404	500 - 112,404	120	14	14:1 56:1	1 - .25 (MM)	6500

Accessories

MODEL	018	020	030	040	055	060	070	080	100	120
A1	72	85	105	145	171	205	230	230	270	330
A2	52	63	81	115	131	155	170	170	190	230
A3	8.5	8.5	11	13.5	22	26	32	32	39	45
A4	20	20	24	30	40	50	65	65	80	100
A5	100	120	150	204	236	250	290	290	350	430
A6	120	140	170	230	270	290	340	340	410	400
A7	10	10	10	13	17	20	25	25	30	35
A8	10	10	12	16	25	30	40	40	50	60
L1	110	140	170	240	270	290	330	330	410	520
L2	80	100	130	180	200	210	240	240	290	360
L3	49	60	76	102	117	120	140	140	165	210
L4	9	10	11	12	17	15	20	20	20	30
L5	72	85	105	145	165	195	220	220	250	300
L6	13	18	18	28	33	38	43	43	58	78
D	15	20	25	35	45	50	70	70	80	90
D1	44	58	72	86	115	130	170	170	160	175
D2	18	23	28	38	48	56	76	76	88	96
B	20	25	30	40	50	60	80	80	90	100
D1	28	32	38	63	72	85	95	105	130	160
D4	38	45	50	78	90	105	140	150	185	230
D5	48	55	62	95	110	125	180	190	240	300
6*D6	6	7	70	9	11	11	17	17	25	28
H1	44	44	46	73	97	99	100	110	130	16
H2	12	12	14	16	18	20	30	30	35	40

Ordering/Dimensions

Installation

Translating-type: lifting screw rotation and do linear motion	Keyed-type: lifting screw anti-rotation and do linear motion	Rotating-type: lifting screw fixed rotation travel nut linear motion

Input Forms

(single input)		SB (double input)
SAR	SAL
C (directive drive-single input)		D (directive drive double input)
MCR	MCL	MDR	MDL

Multiple Jack Systems