Classic Worm Gear Screw Jack MWJ Metric Series

Classic Worm Gear Screw Jack MWJ Metric Series

Listing ID #2660380

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MaterialAlloy Steel
ApplicationMachinery Use
ColorBlue
FinishingPainted
Supply Type Manufacturer, Exporter, Supplier
Preferred Buyer Location All over the world

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Product Details

Material Alloy Steel
Application Machinery Use
Color Blue
Finishing Painted
Feature Corosion Resistant, High Strength, Rugged Structure
Lifting Capacity 0-100kn

We are trusted for quality and thus we follow stringent quality procedures to ensure that only defect-free range is delivered to the customers. From markets of Bangalore(India) to any other, we are capable of providing our product to the buyers anywhere.
Product Details :

CLASSIC Model MWJ.
15 Different Sizes.
Lifting Capacities 5kN TO 1500kN.
Drive Motor Speed up to 1500 rpm.
Self Locking Trapezoidal Screw.
Worm Gear in two ratios, Nominal and Slow.
Top and Bottom Guide bushes for Lifting Screw.
Worm Wheel hobbed for optimum blue contact.
Filled with NLGI EP 1 or 2 grade grease.

Materials of Construction :

Worm Shaft Case carburized Steel, hardened and ground thread profile.
Trapezoidal Screw Shaft Cr-Mo Steel, hardened & tempered.
Housing Alloy aluminum for 5 and 10 kN, all higher sizes in SG Iron.
Worm Wheel and travelling nut in Aluminium Bronze.

Preliminary Selection Guide 01

Screw Jack Type	Standard Worm Gear Screw Jack MWJ
Nominal Size, MWJ	0.5	1	2	2.5	5	10	15	20
Max lifting capacity, kN	5	10	20	25	50	100	150	200
Lifting screw, Tr	18x6	20x5	26x6.35	30x6	40x7	58x12	60x12	65x12
Ratio, Normal N	10:1	5:1	6:1	6:1	6:1	23:1	23:1	8:1
Lift per turn of worm at ratio N, mm	0.6	1	1.058	1	1.167	1.565	1.565	1.5
Ratio, slow L	20:1	20:1	24:1	24:1	24:1	24:1	24:1	24:1
Lift per turn of worm at ratio L, mm	0.3	0.25	0.262	0.25	0.292	0.5	0.5	0.5
Total efficiency at ratio N %	27.2	27	26.4	23.2	21	23	22.5	21.5
Total efficiency at ratio L%	20	16	16	13.6	16	16	16	15
Screw efficiency %	54	46	45	40	36.5	40.8	40	37.9
Screw torque at max lifting capacity, Nm	8.8	17.3	44.6	60	153	468	717	1009
Worm torque at max lifting capacity, at ratio N, Nm	1.7	6	12.8	17.2	44.5	108	166	222
Worm torque at max lifting capacity, at ratio L, Nm	1.2	2.5	5.3	7.3	15	49.7	75	107
Max permissible torque at worm shaft, Nm	12	20.5	36	46.5	92	195	195	280
Weight without lifting screw and protection tube, kg	1.2	1.2	7.3	7.3	16.2	25	25	36
Weight per 100mm of screw, kg	0.14	0.17	0.32	0.45	0.82	1.67	1.8	2.15
Quantity of grease in screw jack, kg	0.05	0.05	0.09	0.1	0.25	0.5	0.5	0.75

Preliminary Selection Guide 02

Screw Jack type	Standard Worm Gear Screw Jack MWJ
Nominal Size, MWJ	25	30	35	50	75	100	150	-
Max lifting capacity, kN	250	300	350	500	750	1000	1500	-
Lifting screw Tr	90x6	95x16	100x16	120x16	127x16	160x20	180x25	-
Rato, Normal N	32:1	32:1	32:1	32:1	32:1	36:1	36:1	-
Lift per turn of worm at ratio N, mm	1.5	1.5	1.5	1.5	1.5	1.67	2.08	-
Ratio, slow L	32:1	32:1	32:1	32:1	32:1	36:1	36:1	-
Lift per turn of worm at ratio L. mm	0.5	0.5	0.5	0.5	0.5	'0.556	'0.694	-
Total efficiency at ratio N%	20	19	18	15	15	15	15	-
Total efficiency at ratio L%	12	12	11	10	10	9	9	-
Screw efficicency %	36.5	35.6	34	30	29	28.5	31	-
Screw torque at max lifting capacity, Nm	1725	2148	2600	4236	6630	11115	19270	-
Worm torque at max lifting capacity, at ratio N, Nm	300	378	461	795	1202	1760	3319	-
Worm torque at max lifting capacity, at ratio L, Nm	164	200	251	397	601	978	1844	-
Max permissible torque at worm shaft, Nm	480	480	705	840	1200	2660	4220	-
Weight without lifting of screw, kg	4.15	4.62	5.2	7.7	8.62	13.82	18.6	-
Quantity of grease in screw jack, kg	1.1	1.1	1.9	2.5	2.5	7	7	-