Screw Jacks RNF-Series

Product catalog summary

Introduction
The Screw Jack RNF-Series is designed for various applications with features including models RNF016 to RNF120, load capacities ranging from 2.5KN to 500KN, and a maximum stroke of 6000 mm. It supports upright and inverted mounting and offers multiple top end options such as top plate, clevis end, threaded end, plain end, and forked head. The system can be used for lifting, lowering, pushing, pulling, and rolling linear motions, and can be arranged as a single unit, in pairs, or in multi-unit configurations. It is available in electric-driven, manual-operated, or both modes, with an anti-backlash nut device and special custom designs available. Accessories include protective tubes, rubber bellows, electric motors, hand wheels, inverters, limit switches, linking shafts, couplings, pillow block bearings, counters, bevel gearboxes, swivel plates, and trunnion bases.

Materials
The lifting screw is made of steel C45, with an option for stainless steel. The worm gear is made of bronze, and the worm shaft is made of heat-treated steel C45, with an option for stainless steel. Bearings are taper roll bearings, and the housing is made of casting iron, with an option for aluminum for smaller models. Oil sealing options include high/low temperature oil sealing.

Technical Datasheet
The document includes technical datasheets for each model, providing detailed specifications and dimensions.

Selection Guide
The guide includes model selection, installation selection, gear ratio selection, input forms selection, screw top end types selection, duty and environment selection, travel stroke, accessories selection, design application sketch, and special working conditions consultation.

Gear Ratio Selection
For manual operation, fast speed is 1 mm travel per full turn, and low speed is 0.25 mm travel per full turn. For electric-driven systems (input 1500 rpm), fast speed is 1500 mm/min, and low speed is 375 mm/min.

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

Dimensions
Dimensions for each model from RNF016 to RNF120 are provided, detailing the specific measurements for each screw jack type.

Catalog excerpts

Screw Jack RNF-Sereis * Introduction Features: * Model: RNF016, 018, 020, 030, 040, 055, 060, 070, 080, 100, 120 * Load Capacities From 2.5KN to 500KN As Standard * Self Locking Trapezoidal Screw, Max Stroke 6000 mm * Upright and Inverted mounting * Top End: Top Plate,Clevis End,Threaded End,Plain End and Forked Head * Lifting, Lowering, Pushing, Pulling and Rolling Linear Motions * Single Unit, In Pairs or Multi-Units Arrangement Available * Electric Driven,Manual Operated or Both Are Available * Anti-backlash Nut Device Available * Special Custom Design Available * Accessories: Protective Tube, Rubber Bellows, Electric Motor, Hand Wheel, Inverter, Limited Switches, Linking Shaft, Coupling, Pillow Block Bearing, Counter, Bevel Gearbox, Swivel Plate and Trunnion Base Materials: * Lifting Screw: steel C45 (optional: stainless steel) * Worm Gear: bronze * Worm Shaft: heated treated steel C45 (optional: stainless steel) * Bearing: taper roll bearing * Housing: casting iron (optional: aluminum for small model) * Oil Sealing (optional: high/low temperature oil sealing) 0

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Screw Jack RNF -Sereis * Technical Datasheet 1

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Screw Jack RNF -Sereis * Technical Datasheet 2

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Screw Jack RNF -Sereis * Technical Datasheet 3

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Screw Jack RNF -Sereis * Technical Datasheet 4

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Screw Jack RNF -Sereis * Selection Guide 1. Model Selection 2. Installation Selection 5

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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 6

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6. Travel Stroke (mm) 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 7

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