Screw Jacks – NEFF
|Screw Jacks – NEFF
Classic Worm Gear Screw Jacks
The new NEFF classic product line of the C-Series Screw jacks prove to be modern high-performance screw jacks. They are technically robust and flexible in terms of application. This is insured not only by the integrated screw lubrictation, making a relubrication of the spindle drive during operation possible, but also by the high-performance gearing, that allows higher efficiency and longer duty cycles. Due to the separated lubrication systems of gear and screw jacks the new C-series screw jacks can be used in any desired installation position. They are provided with a high quality semi-fluid grease and lubricated for life unter normal circumstances.
The housings which are optimized by using FEM (the finite-element-method) allows for a safe use even in case of extreme weights. Within the standard programm it is possible to chose different screw types and grades. Beside the use of single and multiple threads, ball screws with different pitches can also be chosen. In the case of manufacturing with ball screws, the ball screw nuts are completely integrated into the gear housing. Less mounting space is necessary. In addition to the catalogue standards, NEFF Gewindetriebe GmbH is constantly developing new drive solutions for customized projects on request.
Worm Gear Screw Jacks (M-J)
The cubic-type NEFF screw jacks (types M and J) are lifting elements that have enjoyed great popularity among users for decades due to their shape and characteristics. The screw drives from our own production, paired with high-quality worm gearboxes, result in screw jacks with outstanding properties in terms of lifting power and smoothness.
The lifting gear units are available with trapezoidal or ball screw drive with lifting forces from 150 to 500kN. The cubic design enables the use of the screw jacks in all mounting positions. As an N version with continuous spindle or as an R version with rotating spindle in combination with a running nut, the screw jacks can be assembled for the respective application. As a further expansion stage, the lifting elements in the N version can be supplied non-rotating by means of a square protective tube or V-groove.
By connecting individual screw jacks with drive shafts lifting systems can be realized in a simple way. With the rich accessories many problems can be solved with the standard program.
High Performance Worm Gear Screw Jacks (MH Serie)
Our High Performance Worm Gear Screw Jacks of the MH- and JH-Series are convincing of an optimized worm gear associated with a higher efficiency and longer duty cycles.
By separating the gear lubrication from the spindle lubrication the MH- and JH-Serie can be run with an input-speed up to 3000 1/ min. The case-hardened and grounded worm gear guarantees maximum drive torques and fatigue fracture strength.
High Speed Screw Jacks (G)
NEFF high-speed gearboxes supplement the range of screw jacks for extended applications with greater dynamics. Its application range is in the middle load range (12.3 kN – 117 kN). High-speed gearboxes have hardened and ground, spiral-toothed bevel gear ratios. You achieve high lifting speeds while improving efficiency.
The three sizes G1, G2 and G3 are available both as N-version with stationary, continuous spindle, as V-version protected against twisting and as R-version with rotating spindle. The 2: 1 and 3: 1 gear ratios in conjunction with high pitch ball screw spindles enable high dynamic drive solutions.
With ball screw spindles, high speed screw jacks achieve even better performance. All high speed screw jacks are functional in any position and can be mounted on all sides thanks to the cubic design. Depending on the application, the gear units are supplied with up to four drive shafts, so that additional bevel gear drives may be omitted. All high speed screw jacks are filled with oil at the factory.
Telescopic Screw Drives S-TEG
2-Stage synchronously extending telescopic screw drive as a sliding screw or ball screw variant.
The versions can be selected via the product code.
General technical data:
The intelligent drive unit ensures continuous torque and clearance throughout the entire stroke.
Synchronous telescope drive S-TEG with adapter flange
The mounted drive shaft with drive flange offers a multitude of connection options.
Synchronous telescope drive S-TEG with high speed screw Jack G1
The pre-located high speed screw jack, available with transmissions 2:1 and 3:1, offers higher dynamic
Synchronous telescope drive S-TEG with screw jack M3
The upstream screw jack, available with transmissions 6:1 und 24:1 offers high quiet running.