Planetary rack-and-pinion servo drive ZR-PH-EZ

Modular rack ZS, pinion ZR with a precision PH-series planetary gearbox and EZ servo motor. Planetary servo gearmotors in the power range of 0.29–16.0 kW. Gear ratios from 4:1 to 70:1. Linear backlash 10–56 μm. Modules 2–4. Number of teeth 30–40. Feed forces 0.93–16 kN. Linear speeds 0.16–6.7 m/s. Gear quality class 5. Optional features: reduced radial runout ≤10 μm, reduced linear backlash, resolver, up to two brakes, fan, single-cable servo motor with EnDat 3.0 encoder. Supplied as a complete servo drive with motion controller.

Planetary rack-and-pinion servo drive ZR-PH-EZ

Features of ZR-PH-EZ rack-and-pinion servo drives

• High-performance, precision planetary servo gearmotors with bolted pinion
• Brushless synchronous electric motors with permanent magnets and encoders
• Direct mounting of STOBER EZ series servo motors without adapter or coupling
• High precision – low, constant linear backlash
• No positioning errors – fractional gear ratio
• Quiet operation – helical gears
• Maintenance-free – no oil changes required
• Lubricated for lifetime
• Can operate in any mounting position
• Ambient operating temperature: 0°C to 40°C (other ranges on request)
• Filled with synthetic grease CLP HC ISO VG 150
• Maximum permissible gearbox surface temperature ≤ 90°C
• Protection class IP65
• Rotatable plug connectors with quick locking
• Temperature class F (155°C)
• Electronic nameplate for quick servo motor parameter identification
• Not suitable for explosive environments
• Certifications: CE, UKCA, optionally cURus
• Integrated PTC thermistor
• Standard output shaft seal: NBR
• Gearbox housing made of cast iron
• Painted black (RAL9005)
• Supplied with power and encoder cables, double-shielded, in any length

Optional configurations for ZR-PH-EZ servo drives

• Reduced linear backlash
• Reduced radial runout ≤10 μm
• Reinforced bearings for PH3–PH5 sizes
• 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
• Reinforced output shaft bearings
• Protection class IP66, splash-proof and dust-tight design
• PT1000 temperature sensor
• 24 VDC safety brake
• External fan for higher ambient temperature, 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 from –20°C to ≤90°C (horizontal mounting, on request)
• For duty cycles >60% and higher ambient temperatures, FKM radial shaft seals recommended at the output
• ZR-PH-ME planetary rack-and-pinion drive with adapter and coupling for compatibility with commercially available servo motors
• Version with LM servo motor without encoder
• Dual safety brakes PH-MB-EZ in gearbox adapter and on the servo motor

Modular pinions ZR for ZR-PH-EZ rack-and-pinion servo drives

• Gear quality class 5 according to DIN 3962
• Pinion is case-hardened with helical teeth (left-hand helix 19° 31′ 42″)
• Matching rack must be right-hand helix (19° 31′ 42″), minimum quality 5–6, material 16MnCr5 or C45, induction hardened
• Lubrication of pinion and rack is the user’s responsibility; high-quality synthetic grease recommended, NLGI 0

Modular racks ZS for ZR-PH-EZ rack-and-pinion servo drives

• Precision helical teeth, quality class 6
• Hardened and ground helical teeth
• Modules range: 2–6
• Double mounting holes every 62.5 mm
• Max. feed forces: 12.6–83.1 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

• Eliminates 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