Two-speed spindle drive gearboxes simplify maintenance

Redex-Andantex offers a complete range of spindle drive gearboxes designed for high-performance machine tools, plus these units also feature outstanding torque transmission capacity. New RAM High Torque units are designed for full in-line integration inside the ram between the motor and the spindle, which allows the electronic sensors to be located outside the gearbox, thereby simplifying maintenance operations.

This new range of two-speed gearboxes is available in five sizes. The torque transmitted in the low-speed configuration is nearly twice the torque obtained by the previous generation of gearboxes, which was itself often market-leading performance. The range comprises the following models: 190 (800Nm), 220 (1000Nm), 250 (1500Nm), 280 (2500Nm) and 350 (7000Nm).

The exceptional transmitted torque has an obvious impact on the performance of machine tools in roughing work. This torque improvement is the result of a completely new design of the core gear train within the gearbox. Distribution of the torque capacity over each component of the new transmission system is optimized, which allows substantially higher torques to be transmitted.

Another feature of the RAM High Torque units is that there are no internal electronics; this improves reliability and simplifies maintenance. External housings have, nevertheless, been designed to offset the locations of all the electronic sensors used for spindle applications. This means that sensor replacement no longer necessitates several hours of disassembly.

Speed change actuation is hydraulic, so that the pressure circuits routinely available on all types of machine tool can be used.

Easy integration

The two-speed gearboxes are built into the ram, in line between the water-cooled motor and the tool drive spindle. This means that the RAM High Torque can easily use the same coolant feed as the motor, as well as the lubrication circuit already installed for the spindle.

The design features a particularly large diameter (28-54mm) hollow main shaft that is capable of accommodating a hydraulic draw bar as well as easy flow of high-pressure cutting lubricant for swarf removal directly at the tool.

As in the case of built-in motors, the design of the new RAM High Torque also avoids any redundancy of bearings on the shaft line, thereby eliminating any alignment and/or overheating problems and increasing the overall reliability.

The assembly configuration of the RAM High Torque facilitates integration and maximises efficiency while minimising vibration and noise. Despite very high speeds, vibration and noise are reduced to a minimum by precise dynamic balancing of the rotating components. Low angular play of 15' for a 1:1 ratio and 20' in reduction ensures position control during tool changes.

In addition, the ISO 5 quality gears are fully treated and ground, further improving noise and vibration levels and giving extremely high efficiencies.

These characteristics enable the RAM High Torque to attain very high rotation speeds (up to 12,000rpm for the small sizes), which is essential for obtaining high-quality surface states in finishing operations. Even the largest sizes can attain speeds of up to 8000rpm.

Andantex Ltd

Rowley Drive

+44 (0)2476 307722

More products
11 hours ago
High-quality UK made ABS power supply cases
13A Plug-in and In-line styles from BCL Enclosures includes flame-retardant ABS models
1 day ago
Variohm Group buys Phoenix America
Based in Fort Wayne, Indiana ,Phoenix offers a range of absolute and incremental encoders, together with speed and proximity sensors, custom moulded magnets and more
1 day ago
New chain configurator aids machine builders
Tsubaki's recently unveiled configurator can make specifying chain a whole lot quicker and easier
1 day ago
Counterfeit bearings – NSK continues the fight against the fakes
The scale of the fake bearings problem has been highlighted with the discovery of around 23,000 counterfeit NSK packages and labels at a plant in Hebei Province, China
1 day ago
Parker launches new hydraulic fluid particle contamination monitor
The company’s icount LaserCM30 Particle Contamination Monitor is now available and can provide test results in 90 seconds
2 days ago
Last few places on Machinery Safety Course
Just a handful of places remain available on the last Pilz City & Guilds accredited Machinery Safety Course in 2020. Diary date is December 14th to 17th
2 days ago
Camozzi Automation launches new quick exhaust safety valves
Designed to provide a plug and play solution for OEMs that need to be compliant with Machinery Directive 2006/42/EC, Camozzi Automation says that its new quick exhaust 2-way safety valve range also complies with ISO 13849-1 covering the safe design of control systems which perform safety functions
2 days ago
SICK’s Open Service for IO-Link function blocks
A new open software service for control systems has been introduced by SICK
5 days ago
Automatic bearing lubrication brings ore inspiring results in mining
By installing automatic lubricators for bearings on its conveyor drive motors and belt pulleys, an opencast mine in Hungary has seen a range of benefits, including the prevention of unplanned downtime, longer bearing life and reduced repair work
5 days ago
Kinoulton company conveys COVID-combating masks
Here's a great example of the germ of an idea resulting in the combating of COVID