{"id":2336,"date":"2026-07-03T03:09:43","date_gmt":"2026-07-03T03:09:43","guid":{"rendered":"https:\/\/speed-reducer-gearbox.com\/product\/high-precision-planetary-gearbox-replacement-of-apex-ab142-2\/"},"modified":"2026-07-03T03:09:44","modified_gmt":"2026-07-03T03:09:44","slug":"high-precision-planetary-gearbox-replacement-of-apex-ab142-2","status":"publish","type":"product","link":"https:\/\/speed-reducer-gearbox.com\/be\/product\/high-precision-planetary-gearbox-replacement-of-apex-ab142-2\/","title":{"rendered":"High Precision Planetary Gearbox Replacement of APEX AB142"},"content":{"rendered":"
\n

AB Series Inline Servo Planetary Gear Reducer — Drop-In APEX AB142 Alternative — ISO 9001 Certified<\/p>\n

\"High<\/div>\n

AB142 Planetary Gearbox Technical Specifications<\/h2>\n

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 AB142 planetary gear reducer \u2014 from backlash grades through load capacity and environmental protection class. All figures reflect tested, production-unit data rather than theoretical maximums.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Output Torque (1-Stage)<\/td>\n3-100 Nm<\/td>\n<\/tr>\n
Output Torque (2-Stage)<\/td>\n13-600 Nm<\/td>\n<\/tr>\n
Available Ratios<\/td>\n3, 4, 5, 7, 10 \/ 2-stage: 15, 20, 25, 28, 35, 40, 50, 70, 100<\/td>\n<\/tr>\n
Emergency Stop Torque<\/td>\n2.5-4 times of the rated output torque<\/td>\n<\/tr>\n
Nominal Input Speed<\/td>\n3000-6000 rpm<\/td>\n<\/tr>\n
Max Input Speed<\/td>\n10000-20000 rpm<\/td>\n<\/tr>\n
Micro Backlash<\/td>\n1-3 arcmin<\/td>\n<\/tr>\n
Reduced Backlash<\/td>\n3-5 arcmin<\/td>\n<\/tr>\n
Standard Backlash<\/td>\n5-7 arcmin<\/td>\n<\/tr>\n
Torsional Rigidity<\/td>\n2-20 Nm\/arcmin<\/td>\n<\/tr>\n
Max Radial Load<\/td>\n800-6000 N<\/td>\n<\/tr>\n
Max Axial Load<\/td>\n4000 N<\/td>\n<\/tr>\n
Service Life<\/td>\n20000-30000 hours<\/td>\n<\/tr>\n
Transmission Efficiency<\/td>\n\u2265 95%<\/td>\n<\/tr>\n
Weight Range<\/td>\n0.5-28 kg<\/td>\n<\/tr>\n
Operating Temperature<\/td>\n-10\u00b0C to +90\u00b0C<\/td>\n<\/tr>\n
Lubrication<\/td>\nLubrication for life<\/td>\n<\/tr>\n
Protection Rating<\/td>\nIP64-IP65<\/td>\n<\/tr>\n
Mounting Position<\/td>\nAny position<\/td>\n<\/tr>\n
Noise Level<\/td>\n\u2265 65 dB(A)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\"AB142<\/div>\n

What Is the AB142 Planetary Gear Reducer?<\/h2>\n

Designed as a bolt-for-bolt alternative to the APEX AB142 (AB Series), this inline precision planetary gearbox pairs helical-ground planet gears with a case-hardened sun gear to reach 3-100 Nm output torque on a single stage and 13-600 Nm on two stages. The housing is precision-machined aluminium alloy with IP65 sealing, weighing between 0.5-28 kg depending on ratio and stage count. All mounting interfaces replicate the original APEX dimensions, enabling a direct swap with zero mechanical rework.<\/p>\n

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<\/a> operation is ISO 9001-certified, and popular ratios are held in stock at our Condell Park NSW warehouse for same-week dispatch.<\/p>\n

How to Choose the Right Ratio for the AB142<\/h2>\n

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 AB142 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.<\/p>\n

For applications where inertia matching is critical \u2014 such as robotic joint drives or semiconductor wafer stages \u2014 our engineering team can calculate the reflected inertia at each candidate ratio and recommend the variant that maximises servo loop bandwidth. Reach us at sales@speed-reducer-gearbox.com<\/strong> or through the contact form<\/a> for a free sizing analysis.<\/p>\n

Key Components Inside the AB142 Planetary Gearbox<\/h2>\n

A planetary gear reducer earns its name from the orbital motion of its internal elements \u2014 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 AB142 and most other inline planetary gearbox designs.<\/p>\n

\n
\n
\n\u2600<\/span>
\nSun Gear<\/span>\n<\/div>\n

Positioned at the centre of the AB142 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 \u00b5m, it distributes rotational force evenly to the surrounding planet gears while keeping friction and mesh noise to a minimum.<\/p>\n<\/div>\n

\n
\n\u2699<\/span>
\nPlanet Gears<\/span>\n<\/div>\n

Three equally-spaced planet gears orbit the sun gear and mesh simultaneously with the ring gear. This load-sharing arrangement is the reason the AB142 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.<\/p>\n<\/div>\n

\n
\n\ud83d\udd04<\/span>
\nPlanet Carrier<\/span>\n<\/div>\n

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 AB142 carrier withstands repeated emergency-stop shock loads without plastic deformation, protecting downstream shafts and couplings.<\/p>\n<\/div>\n

\n
\n\u2b24<\/span>
\nRing Gear (Annulus)<\/span>\n<\/div>\n

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.<\/p>\n<\/div>\n

\n
\n\ud83d\udd17<\/span>
\nBearings & Shaft System<\/span>\n<\/div>\n

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 AB142’s torsional rigidity rating.<\/p>\n<\/div>\n

\n
\n\ud83d\udee1<\/span>
\nHousing & Seal System<\/span>\n<\/div>\n

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 \u2014 ideal for food-processing or outdoor installations across Australia.<\/p>\n<\/div>\n<\/div>\n

Where the AB142 Planetary Gearbox Fits<\/h2>\n

CNC and Machine-Tool Feed Drives<\/h3>\n

Ball-screw axes on lathes, milling centres, and grinding machines require torsional rigidity of 2-20 Nm\/arcmin or higher to hold positional accuracy during interrupted cuts. The AB142 delivers that stiffness in a compact inline envelope, keeping the machine’s footprint tight while handling radial loads up to 800-6000 N.<\/p>\n

Packaging, Printing and Textile Machinery<\/h3>\n

Multi-station packaging lines, web-fed printing presses, and loom drives rely on synchronised multi-axis servo motion. With output torque reaching 13-600 Nm on two stages and transmission efficiency of \u2265 95%, the AB142 cuts energy consumption compared to worm gear reducer alternatives while maintaining positional synchronisation across the full speed range.<\/p>\n

Collaborative Robotics and Semiconductor Handling<\/h3>\n

Lightweight cobot joints and wafer-transfer stages prize minimal backlash and low noise. The AB142’s micro-backlash grade (1-3 arcmin) and noise level of \u2265 65 dB(A) meet the demanding motion-quality standards of these sectors. Contact us<\/a> to discuss custom output shaft options for your specific robot platform.<\/p>\n

Replacement Parts & Spare Components for the AB142<\/h2>\n

Beyond complete gearbox assemblies, Ever-Power supplies individual replacement parts and spare components for the AB142 and all AB-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<\/a> with your gearbox serial number for compatibility confirmation and pricing.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
Component<\/th>\nMaterial \/ Type<\/th>\nAvailability<\/th>\n<\/tr>\n<\/thead>\n
Sun Gear<\/td>\n20CrMnTi case-hardened steel, helical profile<\/td>\nIn stock<\/td>\n<\/tr>\n
Planet Gear Set (3 pcs)<\/td>\n20CrMnTi, matched set with needle bearings<\/td>\nIn stock<\/td>\n<\/tr>\n
Planet Carrier Assembly<\/td>\nForged alloy steel, precision-bored<\/td>\nIn stock<\/td>\n<\/tr>\n
Ring Gear (Annulus)<\/td>\n42CrMo nitrided steel<\/td>\nIn stock<\/td>\n<\/tr>\n
Output Bearing Kit<\/td>\nTapered roller bearings + preload shims<\/td>\nIn stock<\/td>\n<\/tr>\n
Input Bearing Kit<\/td>\nDeep-groove ball bearings<\/td>\nIn stock<\/td>\n<\/tr>\n
Seal Kit (Input + Output)<\/td>\nDouble-lip FKM \/ Viton seals<\/td>\nIn stock<\/td>\n<\/tr>\n
Lubricant Refill<\/td>\nSynthetic gear oil, factory-spec grade<\/td>\nIn stock<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\"AB142<\/div>\n

Custom Manufacturing Process for the AB142<\/h2>\n

Every AB142 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.<\/p>\n

\n
\n1<\/span>
\nApplication Review & Sizing<\/span>\n<\/div>\n

An engineer reviews your servo motor specs, load profile, and duty cycle to recommend the optimal ratio, backlash grade, and mounting orientation for the AB142 configuration.<\/p>\n<\/div>\n

\n
\n2<\/span>
\nGear Cutting & Profile Grinding<\/span>\n<\/div>\n

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 \u00b5m, reducing mesh noise and contact stress.<\/p>\n<\/div>\n

\n
\n3<\/span>
\nHeat Treatment & Hardening<\/span>\n<\/div>\n

Carburising and quenching brings tooth-surface hardness to 58\u201362 HRC while retaining a tough core, providing both abrasion resistance and shock-load endurance over the full rated service life.<\/p>\n<\/div>\n

\n
\n4<\/span>
\nPrecision Assembly<\/span>\n<\/div>\n

Bearings, seals, and gear trains are assembled in a temperature-controlled cleanroom. Backlash is measured and adjusted to the ordered grade before housing closure.<\/p>\n<\/div>\n

\n
\n5<\/span>
\nFull-Load Run-In Testing<\/span>\n<\/div>\n

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.<\/p>\n<\/div>\n

\n
\n6<\/span>
\nPackaging & Dispatch<\/span>\n<\/div>\n

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.<\/p>\n<\/div>\n

Why Engineers Specify the AB142 Planetary Gear Reducer<\/h2>\n

Backlash Control Across Three Grades<\/h3>\n

Positional accuracy determines yield in automated production. The AB142 offers micro (1-3 arcmin), reduced (3-5 arcmin), and standard (5-7 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.<\/p>\n

Load Capacity and Rigidity<\/h3>\n

With radial load capacity up to 800-6000 N and axial capacity up to 4000 N, the AB142 handles the combined forces encountered in cantilevered tooling, belt-tensioned drives, and vertical-axis lifts. Torsional rigidity of 2-20 Nm\/arcmin keeps angular deflection under control during rapid acceleration and deceleration cycles.<\/p>\n

Energy-Efficient Torque Transmission<\/h3>\n

Rated at \u2265 95% transmission efficiency, the AB142 converts nearly all input power into output torque \u2014 a significant gain over worm gearbox alternatives that sacrifice 30\u201350 % as heat. Lower thermal generation extends lubricant life and bearing service intervals, driving down total cost of ownership.<\/p>\n

What Our Customers Say<\/h2>\n
\n
\n
JW<\/div>\n
\n
James W. — Plant Engineer, Adelaide SA<\/div>\n
★★★★★<\/div>\n<\/div>\n<\/div>\n

“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 \u2014 the new helical gear mesh is quieter than the originals were even when they were new. Very satisfied with the overall value.”<\/p>\n<\/div>\n

\n
\n
MC<\/div>\n
\n
Michelle C. — Design Engineer, Newcastle NSW<\/div>\n
★★★★☆<\/div>\n<\/div>\n<\/div>\n

“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 \u2014 hard to beat for a non-standard order.”<\/p>\n<\/div>\n

\n
\n
TN<\/div>\n
\n
Tom N. — Service Technician, Gold Coast QLD<\/div>\n
★★★★★<\/div>\n<\/div>\n<\/div>\n

“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.”<\/p>\n<\/div>\n

\n
\n
AK<\/div>\n
\n
Anna K. — Procurement Manager, Geelong VIC<\/div>\n
★★★★★<\/div>\n<\/div>\n<\/div>\n

“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.”<\/p>\n<\/div>\n

Why Choose Ever-Power Transmission Australia<\/h2>\n

Ever-Power Transmission Australia Pty Ltd operates from 27 Harley Crescent, Condell Park NSW 2200, holding local inventory of the most popular AB-series ratios for same-week dispatch across New South Wales and interstate. As a gearbox manufacturer<\/a> with vertically integrated production \u2014 from steel forging through final assembly \u2014 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.<\/p>\n

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<\/strong> or email sales@speed-reducer-gearbox.com<\/strong> for a same-day quotation.<\/p>\n

\"Ever-Power<\/div>\n

Frequently Asked Questions<\/h2>\n
\n
\n1. Does the AB142 use the same flange interface as the original APEX?+<\/span><\/summary>\n
Yes. The AB142 replicates the APEX flange bolt circle, pilot diameter, output shaft spline, and overall axial length. No adapter plates or mounting modifications are required \u2014 it is a direct mechanical swap.<\/div>\n<\/details>\n
\n2. What is the rated service life of the AB142?+<\/span><\/summary>\n
Under normal operating conditions (within rated torque and speed), the AB142 is rated for 20000-30000 hours of continuous service. Regular inspection of seals and lubricant condition can extend operational life beyond the rated figure.<\/div>\n<\/details>\n
\n3. Can I purchase individual spare parts for the AB142?+<\/span><\/summary>\n
Yes. We stock sun gears, planet gear sets, bearing kits, seal kits, and lubricant refills for all AB-series gearboxes at our Condell Park NSW warehouse. This allows your maintenance team to replace worn components without scrapping the entire gearbox.<\/div>\n<\/details>\n
\n4. What lubrication does the AB142 require?+<\/span><\/summary>\n
The AB142 ships factory-filled with synthetic gear oil matched to the operating temperature range of -10\u00b0C to +90\u00b0C. Under standard conditions no top-up or oil change is required within the rated service life. A compatible lubricant refill is available as a spare part.<\/div>\n<\/details>\n
\n5. How do I get a quotation?+<\/span><\/summary>\n
Email your servo motor model, required ratio, and preferred backlash grade to sales@speed-reducer-gearbox.com<\/strong>, call +61 2 9708 3322<\/strong>, or use the online contact form<\/a>. We return technical proposals and landed-cost quotations within 24 hours.<\/div>\n<\/details>\n<\/div>\n
\n

Request a Quotation for the AB142 Planetary Gearbox<\/h2>\n

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.<\/p>\n

Get Your Free Quote<\/a><\/p>\n

Ever-Power Transmission Australia Pty Ltd • 27 Harley Crescent, Condell Park NSW 2200 • +61 2 9708 3322<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Swap your APEX AB142 with zero mechanical rework. This inline precision planetary gearbox delivers \u2265 95% efficiency, backlash from 1-3 arcmin, and IP64-IP65 environmental protection. ISO 9001 quality system. Sydney warehouse stock.<\/p>","protected":false},"featured_media":2018,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_cat":[2910],"product_tag":[],"class_list":["post-2336","product","type-product","status-publish","has-post-thumbnail","product_cat-ab-series-planetary-gearbox","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/speed-reducer-gearbox.com\/be\/wp-json\/wp\/v2\/product\/2336","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/speed-reducer-gearbox.com\/be\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/speed-reducer-gearbox.com\/be\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/be\/wp-json\/wp\/v2\/comments?post=2336"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/be\/wp-json\/wp\/v2\/media\/2018"}],"wp:attachment":[{"href":"https:\/\/speed-reducer-gearbox.com\/be\/wp-json\/wp\/v2\/media?parent=2336"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/be\/wp-json\/wp\/v2\/product_cat?post=2336"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/be\/wp-json\/wp\/v2\/product_tag?post=2336"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}