YOUNGJIN WORM
YOUNGJIN WORM
Description
SCREW JACK
It is a standard screw jack that utilizes the experience and technology that only specialized jack manufacturers can do.
- It is composed of a high-precision worm gear and trapezoidal screw shaft, and self-locking is possible at any position within the stroke.
- The reduction mechanism part uses grease lubrication as standard, and realizes long life with smooth operation.
- 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.
- 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.
- 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.
- 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 | |
Komachine Inc.
Head Office:
Ace Dongbaek Tower 1-1101, 16-4,
Dongbaekjungang-ro 16beon-gil, Giheung-gu,
Yongin City, Gyeonggido, South Korea 17015
Branch Office:
606, Seoul Stratup Center, 10,
Noryangjin-ro, Dongjak-gu, Seoul, South Korea 06938
CEOCharlie Park
Corporate #535-86-00664
ⓒ2024 Komachine Inc. All rights reserved.