Description
AF Series Inline Servo Planetary Gear Reducer — Drop-In APEX AF042 Alternative — ISO 9001 Certified
AF042 Planetary Gearbox Technical Specifications
Selecting the right speed reducer gearbox begins with matching mechanical envelope and performance parameters to your servo drive requirements. The table below lists every rated value for the AF042 planetary gear reducer — from backlash grades through load capacity and environmental protection class. All figures reflect tested, production-unit data rather than theoretical maximums.
| Parameter | Value |
|---|---|
| Output Torque (1-Stage) | 40 Nm – 950 Nm |
| Output Torque (2-Stage) | 100 Nm – 2100 Nm |
| Available Ratios | 3; 4; 5; 7; 10 / 2-stage: 15; 20; 25; 28; 35; 40; 50; 70; 100 |
| Emergency Stop Torque | 2.5 times of rated torque |
| Nominal Input Speed | 3000 rpm |
| Max Input Speed | 6000 rpm |
| Micro Backlash | ≤1 arcmin |
| Reduced Backlash | ≤3 arcmin |
| Standard Backlash | ≤5 arcmin |
| Torsional Rigidity | ≥14 Nm/arcmin |
| Max Radial Load | 5000 N |
| Max Axial Load | 9800 N |
| Service Life | ≥20000 hours |
| Transmission Efficiency | ≥97% |
| Weight Range | 1.7 kg – 54 kg |
| Operating Temperature | -10°C to 90°C |
| Lubrication | Lubrication for life |
| Protection Rating | IP65 |
| Mounting Position | Any direction |
| Noise Level | ≤65 dB(A) |
What Is the AF042 Planetary Gear Reducer?
Designed as a bolt-for-bolt alternative to the APEX AF042 (AF Series), this inline precision planetary gearbox pairs helical-ground planet gears with a case-hardened sun gear to reach 40 Nm – 950 Nm output torque on a single stage and 100 Nm – 2100 Nm on two stages. The housing is precision-machined aluminium alloy with IP65 sealing, weighing between 1.7 kg – 54 kg depending on ratio and stage count. All mounting interfaces replicate the original APEX dimensions, enabling a direct swap with zero mechanical rework.
Each gearbox leaves the factory with an individual QC certificate documenting backlash, noise, and vibration readings captured during a full-load run-in test. Our gear reducer operation is ISO 9001-certified, and popular ratios are held in stock at our Condell Park NSW warehouse for same-week dispatch.
Key Components Inside the AF042 Planetary Gearbox
A planetary gear reducer earns its name from the orbital motion of its internal elements — similar to planets revolving around a star. Understanding each component helps engineers evaluate gear mesh quality, predict wear patterns, and select the correct backlash grade. Below is a breakdown of the six core parts found inside the AF042 and most other inline planetary gearbox designs.
Sun Gear
Positioned at the centre of the AF042 gear train, the sun gear connects directly to the servo motor input shaft. Manufactured from case-hardened 20CrMnTi steel with a helical tooth profile ground to a surface finish below Ra 0.4 µm, it distributes rotational force evenly to the surrounding planet gears while keeping friction and mesh noise to a minimum.
Planet Gears
Three equally-spaced planet gears orbit the sun gear and mesh simultaneously with the ring gear. This load-sharing arrangement is the reason the AF042 achieves higher torque density and a longer service life than single-mesh spur or helical gear trains. Each planet rotates on a precision needle-roller bearing for low-friction, high-speed support up to the rated maximum input speed.
Planet Carrier
The planet carrier locks the three planet gears in their equidistant positions and converts their orbital motion into a single rotary output. Machined from forged alloy steel, the AF042 carrier withstands repeated emergency-stop shock loads without plastic deformation, protecting downstream shafts and couplings.
Ring Gear (Annulus)
A large-diameter nitrided 42CrMo steel ring gear is interference-fitted inside the aluminium housing. Its internal teeth engage each planet gear, creating the reaction torque that drives the carrier. The interference fit eliminates micro-movement under peak loads, maintaining consistent backlash throughout the gearbox’s rated service life.
Bearings & Shaft System
Tapered roller bearings at the output end handle combined radial and axial loads, while deep-groove ball bearings on the input side support high-speed rotation. Bearing preload is set during assembly to balance stiffness against drag, contributing directly to the AF042’s torsional rigidity rating.
Housing & Seal System
The CNC-machined aluminium alloy housing provides a lightweight, thermally conductive frame. Double-lip FKM seals at both flanges deliver IP65 protection, keeping synthetic lubricant inside and particulate contamination out — ideal for food-processing or outdoor installations across Australia.
Why Engineers Specify the AF042 Planetary Gear Reducer
Backlash Control Across Three Grades
Positional accuracy determines yield in automated production. The AF042 offers micro (≤1 arcmin), reduced (≤3 arcmin), and standard (≤5 arcmin) backlash grades. CNC feed axes and robotic joints typically call for the reduced grade, while optical positioning and semiconductor handling benefit from the micro grade. This flexibility avoids the cost penalty of over-specification.
Load Capacity and Rigidity
With radial load capacity up to 5000 N and axial capacity up to 9800 N, the AF042 handles the combined forces encountered in cantilevered tooling, belt-tensioned drives, and vertical-axis lifts. Torsional rigidity of ≥14 Nm/arcmin keeps angular deflection under control during rapid acceleration and deceleration cycles.
Energy-Efficient Torque Transmission
Rated at ≥97% transmission efficiency, the AF042 converts nearly all input power into output torque — a significant gain over worm gearbox alternatives that sacrifice 30–50 % as heat. Lower thermal generation extends lubricant life and bearing service intervals, driving down total cost of ownership.
Replacement Parts & Spare Components for the AF042
Beyond complete gearbox assemblies, Ever-Power supplies individual replacement parts and spare components for the AF042 and all AF-series planetary gearboxes. Stocking these parts locally in our Condell Park NSW warehouse means your maintenance team can swap a worn element during a scheduled shutdown instead of replacing the entire unit, cutting repair costs and machine downtime significantly. Contact our parts desk with your gearbox serial number for compatibility confirmation and pricing.
| Component | Material / Type | Availability |
|---|---|---|
| Sun Gear | 20CrMnTi case-hardened steel, helical profile | In stock |
| Planet Gear Set (3 pcs) | 20CrMnTi, matched set with needle bearings | In stock |
| Planet Carrier Assembly | Forged alloy steel, precision-bored | In stock |
| Ring Gear (Annulus) | 42CrMo nitrided steel | In stock |
| Output Bearing Kit | Tapered roller bearings + preload shims | In stock |
| Input Bearing Kit | Deep-groove ball bearings | In stock |
| Seal Kit (Input + Output) | Double-lip FKM / Viton seals | In stock |
| Lubricant Refill | Synthetic gear oil, factory-spec grade | In stock |
Where the AF042 Planetary Gearbox Fits
CNC and Machine-Tool Feed Drives
Ball-screw axes on lathes, milling centres, and grinding machines require torsional rigidity of ≥14 Nm/arcmin or higher to hold positional accuracy during interrupted cuts. The AF042 delivers that stiffness in a compact inline envelope, keeping the machine’s footprint tight while handling radial loads up to 5000 N.
Packaging, Printing and Textile Machinery
Multi-station packaging lines, web-fed printing presses, and loom drives rely on synchronised multi-axis servo motion. With output torque reaching 100 Nm – 2100 Nm on two stages and transmission efficiency of ≥97%, the AF042 cuts energy consumption compared to worm gear reducer alternatives while maintaining positional synchronisation across the full speed range.
Collaborative Robotics and Semiconductor Handling
Lightweight cobot joints and wafer-transfer stages prize minimal backlash and low noise. The AF042’s micro-backlash grade (≤1 arcmin) and noise level of ≤65 dB(A) meet the demanding motion-quality standards of these sectors. Contact us to discuss custom output shaft options for your specific robot platform.
Custom Manufacturing Process for the AF042
Every AF042 planetary gear reducer follows a controlled six-step production sequence from raw material intake through final dispatch. The workflow below shows how we maintain consistency across large-volume orders while accommodating custom OEM specifications.
Application Review & Sizing
An engineer reviews your servo motor specs, load profile, and duty cycle to recommend the optimal ratio, backlash grade, and mounting orientation for the AF042 configuration.
Gear Cutting & Profile Grinding
Sun gears and planet gears are hobbed on CNC gear-cutting centres, then profile-ground to AGMA Class 11 or above for a surface finish below Ra 0.4 µm, reducing mesh noise and contact stress.
Heat Treatment & Hardening
Carburising and quenching brings tooth-surface hardness to 58–62 HRC while retaining a tough core, providing both abrasion resistance and shock-load endurance over the full rated service life.
Precision Assembly
Bearings, seals, and gear trains are assembled in a temperature-controlled cleanroom. Backlash is measured and adjusted to the ordered grade before housing closure.
Full-Load Run-In Testing
Every unit runs at rated torque and speed for a minimum test cycle. Vibration, temperature rise, noise, and backlash are recorded on an individual QC certificate.
Packaging & Dispatch
Anti-corrosion coating is applied, gearboxes are vacuum-sealed in moisture-barrier film, and palletised for freight to our Sydney warehouse at Condell Park NSW 2200.
How to Choose the Right Ratio for the AF042
Every gear ratio represents a trade-off: higher ratios multiply torque but reduce output speed, while lower ratios preserve speed at the cost of torque amplification. The AF042 covers ratios from 3; 4; 5; 7; 10 on a single stage, extending to 15; 20; 25; 28; 35; 40; 50; 70; 100 in two-stage form, spanning nearly every industrial servo application from near-direct-drive indexing to high-inertia conveyor traction.
For applications where inertia matching is critical — such as robotic joint drives or semiconductor wafer stages — our engineering team can calculate the reflected inertia at each candidate ratio and recommend the variant that maximises servo loop bandwidth. Reach us at [email protected] or through the contact form for a free sizing analysis.
What Our Customers Say
“Replaced four ageing APEX gearboxes on our bottling line with Ever-Power equivalents during a scheduled shutdown. The swap took under two hours per unit because the mounting dimensions were identical. Noise dropped noticeably — the new helical gear mesh is quieter than the originals were even when they were new. Very satisfied with the overall value.”
“Our team needed a compact planetary gearbox for a custom turntable indexer. Ever-Power supplied a two-stage variant at a 50:1 ratio with micro-backlash spec. The STEP model was accurate to the last chamfer, which saved us a prototype iteration. Lead time was three weeks including custom shaft length — hard to beat for a non-standard order.”
“I service conveyor drives in a food processing plant, and the IP65-rated housing on these gearboxes makes washdown maintenance far less stressful. No lubricant leaks after 18 months in a high-humidity environment. Replacement seal kits are affordable and available from the Sydney warehouse, which keeps our spare-parts budget under control.”
“We run a blanket-order programme with Ever-Power for 60 units per year across three production lines. Pricing is consistent, delivery dates are reliable, and the QC certificates give our quality department the traceability data they need. Switching from the original APEX supplier saved us roughly 35 % on landed cost without any performance compromise.”
Why Choose Ever-Power Transmission Australia
Ever-Power Transmission Australia Pty Ltd operates from 27 Harley Crescent, Condell Park NSW 2200, holding local inventory of the most popular AF-series ratios for same-week dispatch across New South Wales and interstate. As a gearbox manufacturer with vertically integrated production — from steel forging through final assembly — we control every variable that influences backlash, noise, and service life. The result is a planetary gearbox that matches or exceeds the performance of the original APEX unit at a significantly lower landed cost for Australian buyers.
Our engineering support team provides free application sizing, 3-D CAD models in STEP and IGES formats, and cross-reference tables covering the full APEX AB, AF, AD, AE, and MF series catalogues. Whether you need a single replacement unit or a blanket-order programme for several hundred reducers per year, we tailor lead times and pricing to your procurement cycle. Reach our Sydney office directly at +61 2 9708 3322 or email [email protected] for a same-day quotation.
Frequently Asked Questions
Request a Quotation for the AF042 Planetary Gearbox
Send us your servo motor model, required ratio, and backlash grade. Our engineering team will return a full technical proposal and landed-cost quotation within 24 hours.
Ever-Power Transmission Australia Pty Ltd • 27 Harley Crescent, Condell Park NSW 2200 • +61 2 9708 3322
