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Screw Jack RNS-Series

Product catalog summary

Introduction
High-speed bevel gear screw jacks in the RNS-Series offer enhanced efficiency and speed compared to traditional mechanical worm gear screw jacks. They feature a self-locking trapezoidal screw, eliminating the need for a special brake to prevent lowering under load. The spiral bevel gears provide increased strength for higher capacities, making them suitable for multi-jack lifting systems. These jacks are available in both translating and rotating screw designs, with various screw end options to meet specific requirements.

Specifications

Models: RNS15, RNS25, RNS50, RNS90
Load Capacities: 15KN to 90KN
Gear Ratios: 2:1, 3:1
Max Lifting Speed: 9000mm/min
Max Stroke: 6000 mm
Mounting: Upright and Inverted
Materials: Steel C45, Bronze, Alloy Steel

Model Selection
The document provides a detailed model selection guide, including lifting capacities, gear ratios, travel per turn, worm torque, efficiency ratings, and power requirements for each model (RNS15, RNS25, RNS50, RNS90).

Installation and Operation

Manual and Electric Operation: Fast and low-speed options are available for both manual and electric operations.
Input Forms and Screw Top End Types: Various options are provided for customization.

Accessories and Customization

Available accessories include protective tubes, rubber bellows, hand wheels, and more.
Custom designs and special working conditions can be accommodated upon consultation.

Screw Jack System
The system includes components such as the screw jack, bevel gearbox, motor with worm reducer, gear motor, vertical motor, and foot mount motor.

Catalog excerpts

Screw Jack RNS-Sereis * Introduction High speed bevel gear screw jacks offers higher efficiency and greater speed than other series mechanical worm gear screw jacks. At the same time, high speed bevel gear jack still provide the benefit of a self-locking trapezoidal screw,no special brake is required to prevent the jack from lowering under load. Spiral bevel gears increase strength for higher capacities. High speed bevel gear screw jacks also act as a miter gear box, making them an ideal choice for multi-jack lifting systems. As many as three output shafts may be specified for mounting motors,...

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Screw Jack RNS-Sereis * Selection Guide 1. Model Selection Model Lifting Capacity(tons) Lifting Screw(Tr) mm Gear Ratio(N) Gear Ratio(L) Travel/Turn(N) mm Travel/Turn(L) mm Worm Torque at Full Load(N) Nm Worm Torque at Full Load(L) Nm Efficiency Rating(N) % Efficiency Rating(L) % Max Power/Jack kw Max Input Shaft Torque Nm Housing Weight kg Screw&Pipe Weight/100mm Stroke kg

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Screw Jack RNS-Sereis * Selection Guide 3. Input Forms Selection 4. Screw Top End Types Selection 5. Gear Ratio Selection Manual Operated N: Fast speed: 1 full turn 1 mm travel L: Low speed: 1 full turn 0.25 mm travel Electric Driven (input 1500 rpm) N: Fast speed: 1500 mm/min L: Low speed: 375 mm/min

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7. Duty&Environment Selection Duty Cycles _________ times per day or _________ times per month Ambient Temperature __________ ℃ Conditions __________ (Clean / Dirty, Indoor / Outdoor) 8. Accessories Selection N=Standard jack, no additional options P=Protective tube R=Rubber bellows Y=Hand wheel 9. Design application sketch, very important 10. Special working conditions, please consult sales / engineers

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