Unimec TPR 20018 Trapezoidal Screw Jack Render

Code: TPR 20018

Brand: Unimec

Materials

	Material	Normative	Specification	Indications
Worm	16NiCr4	EN 10084:2008	Casehardening alloy steel	Casehardened and ground on teeth and holds
Worn wheel	CuAl10Fe2-GZ	EN 1982:2008	Alluminium bronze	Centrifuged
Nut	CuAl10Fe2-GZ	EN 1982:2008	Alluminium bronze	Centrifuged
Threaded spindle	C45	EN 10083-2:2006	Carbon steel	Tr 200x18 (ISO 2901:2016) - Rolled or machined
Carter	S235 J0	EN 10025-2:2005	Welded carbon steel	Completely machined on 6 faces
Lubricant	Unimec Mark CA		Calcium based grease	28 kg

General features

Operating temperature [°C]	-10 °C / 80 °C
Static load (traction or compression)	2500 kN
Dynamic load (traction or compression)	1500 kN
Maximum input speed	1800 rpm
Main gearbox weight	1200 kg
Trapezoidal screw weight	220 kg/m
Anti-rotation torque at maximum load	21500 Nm
Maximum admissible static lateral loads	45 kN
Center-to-center diameter	250 mm
Maximum radial load on worm	3,8 kN
Standard working conditions	25 °C - servizio 10%

Specific features

	Nominal ratios
	1/12	1/36
Real ratio	1/12	1/36
Translation per worm revolution	1,5 mm	0,5 mm
Efficiency	14 %	9 %
Start-up efficiency	8 %	5 %
Maximum linear speed	1500	900
Torque at maximum load	2400 Nm	950 Nm
Worm screw maximum torque	28500 Nm	28500 Nm
Idle torque	12 Nm	8 Nm

Euler's law (safety factor =2; dynamic compression load)
Limit Load 1 (red) - 2 (blue) - 3 (green)
C = Load [kN]
L = Overall trapezoidal screw length [mm]

Power curves

The magenta zone indicates a potential heating risk. Working cycles must be carefully analized.
VR = Worm rotational speed [rpm]
VL = Spindle translation speed [mm/min]
P = Requested input power [kW]

Construction forms

Forma S

Forma B

Forma D

Unimec Datasheets

Country & Language	File Name	Download Link
United States (English)	Unimec-EN_59050.pdf	Download
Deutschland (Deutsch)	Unimec-DE_13807.pdf	Download
Italy (Italiano)	Unimec-IT_75906.pdf	Download
中国（简体	Unimec-CN_95426.pdf	Download