{"id":2333,"date":"2026-07-03T03:09:42","date_gmt":"2026-07-03T03:09:42","guid":{"rendered":"https:\/\/speed-reducer-gearbox.com\/product\/high-precision-planetary-gearbox-replacement-of-apex-ab090-2\/"},"modified":"2026-07-03T03:09:42","modified_gmt":"2026-07-03T03:09:42","slug":"high-precision-planetary-gearbox-replacement-of-apex-ab090-2","status":"publish","type":"product","link":"https:\/\/speed-reducer-gearbox.com\/be\/product\/high-precision-planetary-gearbox-replacement-of-apex-ab090-2\/","title":{"rendered":"High Precision Planetary Gearbox Replacement of APEX AB090"},"content":{"rendered":"
\n

AB Series Inline Servo Planetary Gear Reducer — Drop-In APEX AB090 Alternative — ISO 9001 Certified<\/p>\n

\"High<\/div>\n

AB090 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 AB090 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>\n20\u2013400 N\u00b7m<\/td>\n<\/tr>\n
Output Torque (2-Stage)<\/td>\n50\u20131,000 N\u00b7m<\/td>\n<\/tr>\n
Available Ratios<\/td>\n3, 4, 5, 7, 10<\/td>\n<\/tr>\n
Emergency Stop Torque<\/td>\n2.5\u00d7 rated torque<\/td>\n<\/tr>\n
Nominal Input Speed<\/td>\n3,000\u20136,000 rpm<\/td>\n<\/tr>\n
Max Input Speed<\/td>\n10,000 rpm<\/td>\n<\/tr>\n
Micro Backlash<\/td>\n\u2264 3 arcmin<\/td>\n<\/tr>\n
Reduced Backlash<\/td>\n\u2264 5 arcmin<\/td>\n<\/tr>\n
Standard Backlash<\/td>\n\u2264 7 arcmin<\/td>\n<\/tr>\n
Torsional Rigidity<\/td>\n\u2265 7 N\u00b7m\/arcmin<\/td>\n<\/tr>\n
Max Radial Load<\/td>\n4,300\u20135,800 N<\/td>\n<\/tr>\n
Max Axial Load<\/td>\n2,500\u20133,100 N<\/td>\n<\/tr>\n
Service Life<\/td>\n\u2265 20,000 hours<\/td>\n<\/tr>\n
Transmission Efficiency<\/td>\n\u2265 95%<\/td>\n<\/tr>\n
Weight Range<\/td>\n1.4\u201362 kg<\/td>\n<\/tr>\n
Operating Temperature<\/td>\n\u221210\u00b0C to +90\u00b0C<\/td>\n<\/tr>\n
Lubrication<\/td>\nSynthetic lubricating oil<\/td>\n<\/tr>\n
Protection Rating<\/td>\nIP65<\/td>\n<\/tr>\n
Mounting Position<\/td>\nAny orientation<\/td>\n<\/tr>\n
Noise Level<\/td>\n\u2264 65 dB(A)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\"AB090<\/div>\n

AB090 Precision Planetary Gearbox \u2014 Product Overview<\/h2>\n

The AB090 is a compact, inline precision planetary gearbox engineered as a direct mechanical replacement for the APEX AB090 within the AB Series. Helical-ground planet gears mesh with a hardened alloy-steel sun gear to deliver rated output torque of 20\u2013400 N\u00b7m in single-stage form and 50\u20131,000 N\u00b7m in the two-stage configuration. Every critical dimension \u2014 bolt circle, flange pilot, and shaft spline \u2014 mirrors the original APEX footprint, so retrofitting into an existing servo motor drive line requires no bracket modifications or adapter plates.<\/p>\n

Manufactured under an ISO 9001-certified quality management system, each AB090 unit undergoes a full-load run-in test before dispatch. Backlash, vibration, and noise readings are recorded on an individual test certificate. This planetary gearbox for servo motor applications is valued across Australia’s automation, packaging, and machine-tool sectors where uptime and positional accuracy are non-negotiable. Contact us<\/a> for a cross-reference datasheet matched to your existing APEX part number.<\/p>\n

Performance Advantages of the AB090 Over Competing Gearbox Types<\/h2>\n

Ultra-Low Backlash for Servo-Driven Systems<\/h3>\n

The AB090 ships in three backlash grades \u2014 micro (\u2264 3 arcmin), reduced (\u2264 5 arcmin), and standard (\u2264 7 arcmin) \u2014 allowing engineers to match the low backlash planetary gearbox specification to the application rather than over-specifying and inflating cost. In multi-axis servo motor systems, the micro-backlash variant keeps positional repeatability within single-digit arc-seconds over the full service life.<\/p>\n

High Torque Density in a Compact Envelope<\/h3>\n

The AB090 packs up to 20\u2013400 N\u00b7m of continuous single-stage output torque into a compact housing weighing as little as 1.4 (ratio-dependent). The two-stage variant extends that figure to 50\u20131,000 N\u00b7m while adding only moderate axial length. This torque density makes it a strong high torque planetary gearbox candidate for space-constrained machine builds.<\/p>\n

Transmission Efficiency \u2265 95%<\/h3>\n

Each gear stage in the AB090 operates at \u2265 95% mechanical efficiency, translating almost all motor input power into usable output torque. Over a three-shift production cycle this compounds into measurable energy savings compared to worm gear reducer alternatives that typically lose 30\u201350 % of input power as heat.<\/p>\n

\"AB090<\/div>\n

Industry Applications for the AB090 Gearbox<\/h2>\n

Robotics and Motion Control<\/h3>\n

In robotic arm joints and end-effector rotary axes, the AB090 provides the torsional rigidity (\u2265 7 N\u00b7m\/arcmin) needed to maintain path fidelity during high-acceleration moves. Australian integrators deploying 6-axis industrial robots and SCARA platforms choose this planetary gearbox for robotics cells because its compact inline form factor reduces overall arm inertia, allowing faster cycle times without exceeding the servo motor’s peak torque rating.<\/p>\n

Automation and Packaging Lines<\/h3>\n

High-speed filling, labelling, and cartoning machines depend on synchronised multi-axis motion. The AB090’s wide ratio range lets packaging engineers size the planetary gearbox for automation lines without adding belt-and-pulley stages. IP65 sealing and an operating temperature window of \u221210\u00b0C to +90\u00b0C ensure reliable operation in both cold-chain and ambient environments.<\/p>\n

Medical Equipment and CNC Machine Tools<\/h3>\n

CT scanner gantry drives, surgical-robot actuators, and CNC milling spindle feeds share a common need: controlled, vibration-free torque delivery. The AB090’s low-noise helical gear mesh (\u2264 65 dB(A)) and micro-backlash option meet the stringent motion-quality standards of these sectors. For precision planetary gearbox<\/a> applications requiring custom shaft configurations, dimensional modifications are available on request.<\/p>\n

\"AB090<\/div>\n

Key Components Inside the AB090 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 AB090 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 AB090 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 AB090 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 AB090 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 AB090’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

Replacement Parts & Spare Components for the AB090<\/h2>\n

Beyond complete gearbox assemblies, Ever-Power supplies individual replacement parts and spare components for the AB090 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
\"AB090<\/div>\n

Custom Manufacturing Process for the AB090<\/h2>\n

Every AB090 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 AB090 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

Gear Ratio Selection Guide for the AB090<\/h2>\n

Choosing the optimal reduction ratio balances output speed against torque multiplication. A 10:1 planetary gearbox converts a 3,000 rpm servo input into 300 rpm at the load shaft while multiplying motor torque roughly tenfold (minus friction losses). For ball-screw feed axes on CNC machine tools, ratios between 5:1 and 20:1 are the most common. High-ratio variants (50:1 through 100:1) suit turntable indexers, rotary welding positioners, and heavy conveyor drives.<\/p>\n

The AB090’s available ratios span 3, 4, 5, 7, 10, giving engineers a broad selection window. If you are uncertain which ratio best fits your application, send your load data to our engineering team via the speed reducer gearbox enquiry form<\/a> and we will return a sizing recommendation within one business day.<\/p>\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

What Our Customers Say<\/h2>\n
\n
\n
DM<\/div>\n
\n
David M. — Automation Engineer, Sydney NSW<\/div>\n
★★★★★<\/div>\n<\/div>\n<\/div>\n

“We switched from genuine APEX units to Ever-Power replacements on a 12-axis pick-and-place cell last year. Backlash measured tighter than the spec sheet promised. After 14 months and roughly 8,000 operating hours, no measurable backlash increase. The cost saving per unit let us stock two spares on-site, which we never could justify with the original brand.”<\/p>\n<\/div>\n

\n
\n
KT<\/div>\n
\n
Karen T. — Maintenance Manager, Melbourne VIC<\/div>\n
★★★★★<\/div>\n<\/div>\n<\/div>\n

“Our packaging line runs 20 hours a day and we needed a planetary gearbox that could handle constant start-stop cycles without overheating. The gearbox has been running for over a year with zero unplanned stoppages. What impressed me most was the ability to order individual seal kits and bearing sets instead of scrapping the whole unit when a seal wore out.”<\/p>\n<\/div>\n

\n
\n
RP<\/div>\n
\n
Raj P. — CNC Workshop Owner, Brisbane QLD<\/div>\n
★★★★☆<\/div>\n<\/div>\n<\/div>\n

“I fitted the reduced-backlash model onto a retrofitted CNC lathe turret drive. Positioning accuracy is within \u00b10.01 mm, which matches what the machine achieved with its original European gearbox. Delivery from the Condell Park warehouse took four days to Brisbane \u2014 faster than importing. Would order again for the next machine upgrade.”<\/p>\n<\/div>\n

\n
\n
SL<\/div>\n
\n
Steve L. — Robotics Integrator, Perth WA<\/div>\n
★★★★★<\/div>\n<\/div>\n<\/div>\n

“We deploy collaborative robot cells across mining-support workshops in WA. The micro-backlash units have held up well in dusty, high-vibration environments thanks to IP65 sealing. Ever-Power’s engineering team provided STEP files same-day, which made the integration painless. Solid gear reducer at a fair price.”<\/p>\n<\/div>\n

Frequently Asked Questions<\/h2>\n
\n
\n1. Is the AB090 a true drop-in replacement for the APEX AB090?+<\/span><\/summary>\n
Yes. The flange bolt pattern, pilot diameter, output shaft spline, and overall length are dimensionally identical to the APEX AB090, so no adapters or bracket changes are needed. We supply a dimensional comparison drawing with every quotation for your verification before purchase.<\/div>\n<\/details>\n
\n2. What backlash grade should I specify for my servo motor application?+<\/span><\/summary>\n
For general automation and packaging, the standard grade (\u2264 7 arcmin) is sufficient. CNC feed axes and robotic joints typically call for the reduced grade (\u2264 5 arcmin). Optical positioning, semiconductor handling, and other ultra-high-accuracy applications benefit from the micro grade (\u2264 3 arcmin).<\/div>\n<\/details>\n
\n3. How does the AB090 compare to a helical gearbox or worm gearbox?+<\/span><\/summary>\n
Planetary gearboxes distribute load across multiple gear meshes, yielding higher torque density and \u2265 95% efficiency compared to roughly 85 % for a typical helical gearbox and 50\u201370 % for a worm gearbox. The AB090 is the optimal choice when compactness, efficiency, and low backlash are priorities.<\/div>\n<\/details>\n
\n4. Can I mount the AB090 in any orientation?+<\/span><\/summary>\n
Yes, the AB090 is rated for operation in any mounting position \u2014 horizontal, vertical shaft-up, vertical shaft-down, or inverted. The IP65-sealed housing and oil-bath lubrication system maintain consistent gear lubrication regardless of orientation.<\/div>\n<\/details>\n
\n5. What is the lead time for standard and custom orders?+<\/span><\/summary>\n
Standard AB090 units in popular ratios are stocked at our Condell Park NSW warehouse and ship within 3\u20135 business days. Custom configurations require 3\u20134 weeks production lead time. Contact sales@speed-reducer-gearbox.com<\/strong> or call +61 2 9708 3322<\/strong> for a firm delivery date.<\/div>\n<\/details>\n<\/div>\n
\n

Request a Quotation for the AB090 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":"

Engineered to replace the APEX AB090 without any bracket rework. 20\u2013400 N\u00b7m single-stage output, \u2264 3 arcmin micro-backlash option, IP65 protection. ISO 9001 quality. Stocked locally in Condell Park NSW for fast Australian delivery.<\/p>","protected":false},"featured_media":2011,"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-2333","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\/2333","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=2333"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/be\/wp-json\/wp\/v2\/media\/2011"}],"wp:attachment":[{"href":"https:\/\/speed-reducer-gearbox.com\/be\/wp-json\/wp\/v2\/media?parent=2333"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/be\/wp-json\/wp\/v2\/product_cat?post=2333"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/be\/wp-json\/wp\/v2\/product_tag?post=2333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}