Planetary rack-and-pinion servo drive ZV-PE-EZ

Modular rack ZS, pinion ZV with an economical PE planetary gearbox and EZ servo motor. Planetary servo gearmotors in the power range of 0.31–7.7 kW. Gear ratios from 3:1 to 50:1. Linear backlash 40–83 μm. Modules 2–3. Number of teeth 16–25. Feed forces 0.48–6.1 kN. Linear speeds 0.13–4.5 m/s. Optional resolver, fan, brake, and single-cable servo motor with EnDat 3.0 encoder. Supplied as a complete servo drive with motion controller.

Planetary rack-and-pinion servo drive ZV-PE-EZ

Features of ZV-PE-EZ rack-and-pinion servo drives

• Cost-effective planetary servo gearmotors with slide-on pinion
• Compact and highly dynamic thanks to direct mounting of the servo motor onto the gearbox
• Brushless synchronous electric motors with permanent magnets and encoders
• Two pinion mounting positions available:
  • (E) teeth at the end of the output shaft
  • (S) teeth located close to the gearbox for higher permissible feed forces
• Direct mounting of STOBER EZ series servo motors without adapter or coupling
• High precision – low, constant linear backlash: 40–83 μm
• No positioning errors – ratio expressed as a fraction
• Quiet operation – helical gear teeth
• Maintenance-free – no oil changes required
• Lubricated for lifetime
• Can operate in any mounting position
• Filled with synthetic grease CLP HC ISO VG 150
• Maximum permissible gearbox surface temperature ≤ 80°C
• Protection class IP65
• Rotatable plug connectors with quick locking
• Ambient operating temperature range: 0°C to +40°C
• Temperature class F (155°C)
• Electronic nameplate for quick servo motor parameter identification
• Not suitable for use in explosive environments
• Certifications: CE, UKCA, optionally cURus
• Integrated PTC thermistor
• Standard output shaft seal: NBR
• Aluminum gearbox housing
• Painted black (RAL9005)
• Supplied with power and encoder cables, double-shielded, in any length

Optional versions of ZV-PE-EZ rack-and-pinion servo drives

• Shock-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 seals for high temperatures
• Protection class IP66 – splash-proof and dust-tight design
• PT1000 temperature sensor
• 24 VDC safety brake
• External fan for higher ambient temperatures, increased continuous power, or up to 30% higher torque
• Food-grade oil Mobil CIBUS 150/220 for food industry applications (NSF H1 approved)
• Custom coatings and RAL colors on request
• Reversible operation in the range –20°C to ≤90°C (horizontal mounting, on request)
• For duty cycles > 60% and higher ambient temperatures, FKM radial shaft seals are recommended at the output
• ZV-PE-ME version with adapter and coupling for compatibility with commercially available servo motors
• Version with LM servo motor without encoder

Modular pinions for ZV-PE-EZ rack-and-pinion servo drives

• Gear quality class 6 according to DIN 3962
• Pinions are case-hardened with helical teeth (left-hand helix 19° 31′ 42″)
• Backlash-free shaft-hub connection, shrink-fit bonded and keyed
• Matching rack must be right-hand helix (19° 31′ 42″), minimum quality class 8, material C45, induction hardened
• Lubrication of pinion and rack is the user’s responsibility; high-quality synthetic grease (NLGI 0) recommended

Modular racks ZS for ZV-PE-EZ rack-and-pinion servo drives

• Precision helical teeth, quality class 6 according to DIN 3962-1
• Hardened and ground helical teeth
• Modules range: 2–6
• Double mounting holes every 62.5 mm
• Feed forces: 12.6 to 83.1 kN
• Available in three lengths: 500, 1000, and 2000 mm

Feedback systems in ZV-PE-EZ rack-and-pinion servo drives

• Resolver
• Absolute encoder EnDat 2.1 / 2.2
• Inductive / optical encoders
• Multiturn / Singleturn
• Single-cable solution (OCS) with absolute encoder EnDat 3.0 – EQI 1131, for cable lengths up to 100 m
• Elimination of homing procedures when using multiturn absolute encoders

Compatibility of ZV-PE-EZ rack-and-pinion servo drives with drive controllers

• Single-axis drives SB6, SD6; dual-axis SC6; multi-axis SI6 by STOBER
• ACOPOS by B&R
• AX5000 / AX8000 by Beckhoff
• AKD, S300, S400, S600, S700 by Kollmorgen / Seidel / Danaher
• Sinamics S120 by Siemens
• IndraDrive C by Bosch Rexroth
• Kinetix 6500 / 5700 / 5500 by Allen-Bradley
• Digitax by Control Techniques