Description
EP Series — Drop-In APEX AH355 Alternative — ISO 9001 Certified
AH355 Planetary Gearbox Technical Specifications
The table below presents the rated values for the AH355 planetary gear reducer. All figures reflect tested, production-unit data.
| Parameter | Value |
|---|---|
| Output Torque | Nm |
| Output Torque (2-Stage) | Nm |
| Available Ratios | – 4, 5, 7, 10 4, 5, 7, 10 |
| Ratios (2-Stage) | – 16, 20, 28, 40, 50, 70, 100 16, 20, 28, 40, 50, 70, 100 |
| Backlash Grades | arcmin / arcmin / arcmin |
| Nominal Input Speed | 3,000–5,000 rpm |
| Max Input Speed | 10,000 rpm |
| Torsional Rigidity | ≥ 7 N·m/arcmin |
| Service Life | ≥ 20,000 hours |
| Efficiency | % |
| Operating Temperature | −10°C to +90°C |
| Lubrication | Synthetic lubricating oil |
| Protection | IP65 |
| Mounting | Any orientation |
| Noise | ≤ 65 dB(A) |
What Is the AH355 Planetary Gear Reducer?
Designed as a bolt-for-bolt alternative to the APEX AH355, this inline precision planetary gearbox pairs helical-ground planet gears with a case-hardened sun gear to deliver Nm output torque. All mounting interfaces replicate the original APEX dimensions, enabling a direct swap with zero mechanical rework. Backlash grades span from arcmin (micro) through arcmin (standard), and transmission efficiency reaches %.
Every gearbox leaves the factory with an individual QC certificate. Our gear reducer engineering team provides free application sizing and 3-D CAD models from our Condell Park NSW office.
Why Engineers Specify the AH355 Gear Reducer
Backlash Control
Backlash grades from arcmin to arcmin give engineers flexibility. CNC feeds typically use the reduced grade; optical positioning and semiconductor handling benefit from micro.
Load Capacity and Rigidity
Three simultaneous gear meshes yield higher torque density than single-mesh arrangements. Torsional rigidity of ≥ 7 N·m/arcmin keeps angular deflection under control during rapid accel/decel cycles.
Energy Efficiency
Rated at %, the AH355 converts nearly all input power into output torque. Lower heat generation extends lubricant life and bearing intervals, reducing total cost of ownership.
Key Components Inside the AH355 Planetary Gearbox
Understanding the internal architecture helps engineers evaluate gear mesh quality and predict maintenance intervals. Below is a breakdown of the six core parts inside the AH355.
Case-hardened 20CrMnTi steel sun gear with helical tooth profile, ground to Ra 0.4 µm. Connects to the servo motor input shaft and distributes torque to the surrounding planet gears with minimal friction and noise.
Three equally-spaced planet gears orbit the sun gear while meshing with the ring gear. Multi-point load sharing delivers higher torque density and longer service life than single-mesh arrangements.
Forged alloy steel carrier holds the planet gears in equidistant positions and converts their orbital motion into a single rotary output. Withstands repeated shock loads without deformation.
Nitrided 42CrMo steel ring gear interference-fitted inside the aluminium housing. Maintains consistent backlash over the full rated service life.
Tapered roller output bearings handle combined radial/axial loads; deep-groove ball input bearings support high-speed rotation. Preload set during assembly for optimal stiffness.
CNC-machined aluminium alloy housing with double-lip FKM seals at both flanges. IP65 protection keeps lubricant in and contaminants out.
Where the AH355 Planetary Gearbox Fits
CNC and Machine-Tool Feed Drives
Ball-screw axes on lathes and milling centres require the torsional rigidity that the AH355 delivers in a compact inline envelope, keeping machine footprint tight while handling combined cutting forces.
Packaging, Printing and Textile Machinery
With output torque of Nm and efficiency of %, the AH355 cuts energy consumption versus worm gear alternatives while maintaining positional synchronisation across multi-axis servo lines.
Collaborative Robotics and Semiconductor Handling
Lightweight cobot joints and wafer-transfer stages prize minimal backlash (arcmin) and low noise (≤ 65 dB(A)). Contact us for custom output shaft options.
Replacement Parts & Spare Components for the AH355
Beyond complete assemblies, Ever-Power stocks individual replacement parts for the AH355 at our Condell Park NSW warehouse. Contact our parts desk with your serial number for compatibility confirmation.
| Component | Material | Stock |
|---|---|---|
| Sun Gear | 20CrMnTi steel, helical | In stock |
| Planet Gear Set (3 pcs) | 20CrMnTi + needle bearings | In stock |
| Planet Carrier | Forged alloy steel | In stock |
| Ring Gear | 42CrMo nitrided steel | In stock |
| Output Bearing Kit | Tapered roller + shims | In stock |
| Input Bearing Kit | Deep-groove ball bearings | In stock |
| Seal Kit | FKM / Viton double-lip | In stock |
| Lubricant Refill | Synthetic gear oil | In stock |
Manufacturing Process for the AH355
Every AH355 follows a controlled six-step production sequence.
Engineer reviews your servo specs, load profile, and duty cycle to recommend optimal configuration.
Gears hobbed on CNC centres, profile-ground to AGMA Class 11+, surface finish below Ra 0.4 µm.
Carburising and quenching to 58–62 HRC tooth-surface hardness with tough core.
Cleanroom assembly with backlash measured and adjusted to ordered grade.
Run at rated torque/speed; vibration, noise, backlash recorded on individual QC certificate.
Anti-corrosion coating, vacuum-sealed, palletised to Condell Park NSW warehouse.
What Our Customers Say
“Blanket order for 60 units/year across three lines. Pricing consistent, delivery reliable. Roughly 35 % savings on landed cost versus European brands.”
“We fitted EP-series gearboxes on a 12-axis pick-and-place cell. Backlash measured tighter than the spec sheet promised. After 14 months and roughly 8,000 hours, no measurable increase. The cost saving let us stock spares on-site.”
“Our packaging line runs 20 hours a day. The EP gearbox has been running over a year with zero unplanned stoppages. Being able to order individual seal kits instead of scrapping the whole unit is a big plus.”
Why Choose Ever-Power Transmission Australia
Ever-Power Transmission Australia Pty Ltd operates from 27 Harley Crescent, Condell Park NSW 2200, holding local inventory for same-week dispatch. As a gearbox manufacturer with vertically integrated production, we control every variable from steel forging through final assembly.
Our engineering team provides free sizing, STEP/IGES CAD models, and full technical support. Reach us at +61 2 9708 3322 or [email protected].
Frequently Asked Questions
Request a Quotation for the AH355 Planetary Gearbox
Send your servo motor model, ratio, and backlash grade. Full technical proposal and landed-cost quotation within 24 hours.
Ever-Power Transmission Australia • 27 Harley Crescent, Condell Park NSW 2200 • +61 2 9708 3322
