SCREW JACK
Model Name
KOC
Series
Screw Jack
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Data
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YOUNGJIN WORM

Precision Worm Reducer, Gantry Robot 3:1 Reducer, Dual Pitch Cavex Reducer, Dual Lead Worm, Screw Jack and more

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Manufacturer
YOUNGJIN WORM
Product Type
Machine
Brand
-
SKU
142179
Product Name
SCREW JACK
Model Name
KOC, K1C, K2C, K3C, K3 1/2C, K4A, K5A, K6A, K6 1/2A, K7A
Size
-
Weight
-
Product Details

SCREW JACK

It is a standard screw jack that utilizes the experience and technology that only specialized jack manufacturers can do.

  1. It is composed of a high-precision worm gear and trapezoidal screw shaft, and self-locking is possible at any position within the stroke.
  2. The reduction mechanism part uses grease lubrication as standard, and realizes long life with smooth operation.
  3. There are abundant selection functions such as the shaft protection cover (BELLOWS BOOT) that protects the screw shaft, the handle for manual operation (HAND WHEEL), the trunnion base (TRUNNION BASE), the limit switch (LIMIT SWITCH), and the RC encoder (ENCODER) for computer control.

 

Nut Lifting Jack

A type of jack in which a nut moves by rotating a screw shaft is called a nut lift type jack.

  1. Since it does not require space for raising and lowering the screw shaft, the stroke can be used effectively to the end, and it is particularly convenient when space is limited.
  2. It is easy to support the tip of the screw shaft because it enables stable lifting and lowering even in the case of a long stroke, and the tip of the screw shaft is designed with a cylindrical finish for bearings.
  3. By adopting a thrust bearing instead of a radial bearing, which is normally used for supporting the tip of a screw shaft, by partially transforming the shape of the shaft end, buckling can be avoided even in the case of a long stroke.

 

Standard specification

 

model number KOC K1C K2C K3C K3 1/2C
Basic Capacity(Tonf) 1 2.5 5 10 15
Screw shaft diameter(mm) 20 25 40 50 55
Screw shaft lead(mm) 4 5 8 10 10
worm reduction ratio H 5 6 6 8 8
L 24 24 24 24 24
efficiency H 0.21 0.21 0.21 0.2 0.18
L 0.13 0.15 0.12 0.14 0.14
Maximum allowable torque per jack turn (kw) 0.5 0.5 1.1 1.8 2.8
Required input torque for basic capacity (kgf-m) H 0.6 1.6 5 10 16.1
L 0.21 0.55 2.3 4.6 7.5
Maximum input speed RPM for basic capacity H 600 230 140 140 140
L 1665 600 300 290 290
Maximum allowable input speed RPM H 1575 1150 915 870 870
L 1730 1315 950 1055 1055
Weight (kgf)
For stroke 100mm		 no anti-rotation key 3.6 9 15 25 28
With anti-rotation key 3.6 9 15 32 35
Grease filling amount (kgf) 0.1 0.4 0.6 1 1.5
Anti-rotation key torque (kgf-m) 1.5 4.5 14 36 60
Input Shaft Allowable Overhang Load (kgf) 30 45 70 120 120
Input shaft no-load torque (kgf-m) 0.03 1.1 0.2 0.3 0.4
torque factor H 0.6 0.64 1 1 1.07
L 0.21 0.27 0.45 0.46 0.5
speed factor
Stroke advance per 1 rotation of the input shaft mm		 H 0.8 0.83 1.33 1.25 1.25
L 0.17 0.21 0.33 0.42 0.42
screw shaft forming machine cutting machine cutting machine cutting machine cutting machine cutting
screw shaft cover material Rigid Vinyl Chloride Rigid Vinyl Chloride Rigid Vinyl Chloride Rigid Vinyl Chloride Rigid Vinyl Chloride
Operating temperature range (°C) -15~+80 -15~+80 -15~+80 -15~+80 -15~+80
model number K4A K5A K6A K6 1/2A K7A
Basic Capacity (Tonf) 20 30 50 75 100
Screw shaft diameter (mm) 63 85 118 132 150
Screw shaft lead (mm) 12 16 16 16 20
worm reduction ratio H 8 10 2/3 10 2/3 10 2/3 10 2/3
L 24 32 32 38 36
efficiency H 0.18 0.18 0.13 0.13 0.13
L 0.14 0.12 0.09 0.08 0.08
Maximum allowable torque per jack turn (kw) 4 6.5 11 15 17
Required input torque for basic capacity (kgf-m) H 26.5 40 89 137 180
L 11.5 19 45 62 105
Maximum input speed RPM for basic capacity H 135 130 90 75 75
L 300 255 190 160 125
Maximum allowable input speed RPM H 810 795 535 530 510
L 995 825 555 540 400
Weight (kgf)
For stroke 100mm		 no anti-rotation key 44 74 190 290 560
With anti-rotation key 53 101 205 350 565
Grease filling amount (kgf) 2 3 4 6 8
Anti-rotation key torque (kgf-m) 92 185 440 745 1120
Input Shaft Allowable Overhang Load (kgf) 120 220 250 250 300
Input shaft no-load torque (kgf-m) 0.5 1 2 3 4
torque factor H 1.22 1.22 1.6 1.75 1.62
L 0.55 0.62 0.84 0.8 0.96
speed factor
Stroke advance per 1 rotation of the input shaft mm		 H 1.5 1.5 1.5 1.5 1.58
L 0.5 0.5 0.5 0.42 0.56
screw shaft forming machine cutting machine cutting machine cutting machine cutting machine cutting
screw shaft cover material Steel Steel Steel Steel Steel
Operating temperature range (°C) -15~+100 -15~+100 -15~+100 -15~+100 -15~+100
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YOUNGJIN WORM
YOUNGJIN WORM
Precision Worm Reducer, Gantry Robot 3:1 Reducer, Dual Pitch Cavex Reducer, Dual Lead Worm, Screw Jack and more
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