ZV-K-EZ rack & pinion angular servo drive

Rack and pinion with bevel gearbox, servo motor and absolute encoder. Angular servo geared motors in power range 0,31 – 16,0 kW. Gearbox ratio range 4:1 – 272:1. Linear backlash 12 – 111 μm. Modules rack and pinion 2 – 4. Number of teeth 18 – 25. Feed forces 0,91 – 15,0 kN. Linear speeds 0,04 – 3,4 m/s. Optionally with reduced linear backlash, resolver, max. 2-brakes, fan. Includes servo drive with motion controller and cables

ZV-K-EZ angular rack and pinion servo drive

Features of ZV-K-EZ rack & pinion servo drives

• Very rigid angular servo gear motors with sliding pinion
• Brushless synchronous electric motors with permanent magnets, equipped with encoders
• Direct mounting of STOBER EZ servo motor without adapter or coupling
• High precision – small, constant linear backlash: 12 – 111 μm
• No positioning errors – gear ratio expressed as a fraction
• Quiet operation – helical gear teeth
• Maintenance-free – no oil change required
• Pre-lubricated for the entire service life
• Mounting position to be specified when ordering
• Lubricated with synthetic grease CLP HC ISO VG 150
• Maximum permissible gearbox surface temperature ≤ 90 °C
• Protection class: IP65
• Rotatable plug connectors with quick lock
• Operating ambient temperature: 0° C to +40° C
• Temperature class F (155°C)
• Electronic nameplate for quick identification of servo motor parameters
• Not suitable for use in explosive atmospheres
• Certifications: CE, UKCA, optionally cURus
• Integrated PTC thermistor
• Standard output shaft sealing: NBR
• Gearbox housing: cast iron, painted black RAL9005
• Supplied with power and encoder cables, double-shielded, any length

Optional execution of ZV-K-EZ linear servo drives

• Reduced linear backlash
• Impact-resistant resolver
• Absolute encoder Singleturn / Multiturn (inductive or optical) EnDat 2.1 / 2.2
• Single-cable absolute Multiturn encoder EnDat 3.0
• FKM VITON shaft sealing rings for high temperatures
• Reinforced output shaft bearings
• Protection class IP66, splash-proof and dust-proof version
• PT1000 temperature sensor
• Safety brake 24 V DC
• Oil reservoir for vertical mounting (EL5)
• External fan for higher ambient temperature, increased continuous power, or +30% torque
• Non-toxic oil Mobil CIBUS 150/220 for food industry, NSF H1 certified
• Special paint and RAL colors on customer request
• Reversible operation from –20° to ≤ 90° for horizontal mounting on request
• For duty cycle > 60% and higher ambient temperatures,
• FKM radial shaft seals recommended at the output
• Angular ZV-K-ME drive with adapter and coupling matched to servo motors available
• With LM servo motor without encoder
• With two safety brakes K-MB-EZ on gearbox adapter and servo motor

Modular gears of ZV-K-EZ servo drives

• Pinion quality: Class 6 according to DIN 3962
• Drive gear is diffusion-hardened, with spiral teeth (counterclockwise 19° 31′ 42″)
• Backlash-free shaft-hub connection, shrink-fitted and keyed
• Pinion must be right-hand design (19° 31′ 42″), minimum quality 8, material C45, induction hardened
• Lubrication of pinion and rack is customer responsibility; high-quality synthetic oil-based grease recommended, NLGI 0

Modular ZS racks for ZV-K-EZ servo drives

• Precise helical teeth, Class 6 quality per DIN 3962-1
• Spiral teeth, hardened and ground
• Modules: 2 – 6
• Double number of mounting holes every 62.5 mm
• Feed forces: 12.6 – 83.1 kN
• Three lengths available: 500, 1000, and 2000 mm

Feedback in ZV-K-EZ Rack and Pinion Servo Drives

• Resolver
• Absolute encoder EnDAT 2.1 / 2.2
• Inductive / optical encoders
• Multiturn / Singleturn
• Single-cable OCS solution with absolute encoder EnDat 3.0 – EQI 1131
• Elimination of referencing for Multiturn absolute encoders

Compatibility of ZV-K-EZ servo drives with drive controllers

• Single-axis: SB6, SD6 (STOBER)
• Dual-axis: SC6 (STOBER)
• Multi-axis: SI6 (STOBER)
• Acopos (B&R)
• AX5000 / AX8000 (Beckhoff)
• AKD, S300, S400, S600, S700 (Kollmorgen / Seidel / Danaher)
• Sinamics S120 (Siemens)
• IndraDrive C (Bosch Rexroth)
• AB Kinetix 6500 / 5700 / 5500 (Allen-Bradley)
• CT Digitax (Control Techniques)