{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"GBX0800080551F","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"GBX0800080551F","canonicalUrl":"https://aoctrl.com/schneider/GBX0800080551F","factsUrl":"https://aoctrl.com/api/mcp/products/GBX0800080551F","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric GBX0800080551F planetary gearbox, straight teeth, 80 mm diameter, 8:1 reduction, 50 N.m continuous torque, 94% efficiency, 9 arcmin backlash, IP54 shaft output.","salesMarkdown":"The GBX0800080551F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, sized for servo or stepper motor output stages where a compact 80 mm diameter and an 8:1 reduction ratio are needed. The continuous output torque is 50 N.m at 100 rpm and 30 °C; the maximum intermittent torque reaches 80 N.m under the same conditions. That 50 N.m continuous figure is the one to size against — the gearbox will hold that torque indefinitely within the 30,000-hour service life at rated speed. ## Efficiency, backlash, and noise — the precision trade-offs Rated at 94 % efficiency, the GBX0800080551F loses about 6 % of input power to friction and windage — typical for a single-stage planetary with straight teeth. The torsional backlash is 9 arcmin maximum, which sets the repeatability floor for positioning: if your axis requires less than 9 arcmin of lost motion at reversal, this gearbox will add that uncertainty. Noise output is 60 dB at 1 m, no-load — quiet enough for a lab or light assembly line, but not silent; the straight-tooth profile generates more whine than a helical planetary. ## Sourcing an obsolete gearbox — lifecycle reality and supply posture Schneider Electric lists the GBX0800080551F as obsolete. The gearbox is available through independent surplus and broker channels — quantities are lot-specific and confirmed at RFQ. ## Mechanical limits — axial and radial load capacity at the output shaft The output shaft carries a maximum axial force (Fa) of 1200 N for a 10,000-hour life at 100 rpm and 30 °C, derated to 900 N for the full 30,000-hour service life. Radial force (Fr) is 950 N for 10,000 hours, dropping to 650 N for 30,000 hours — both measured at mid-distance from the output shaft. These are the limits for overhung loads like pulleys or pinions mounted directly on the shaft; exceeding them shortens the bearing life below the 30,000-hour target. ## Environmental fit — IP54, temperature range, and lubrication The shaft output seal carries an IP54 rating — protected against dust ingress and splashing water, but not immersion or high-pressure washdown. Ambient operating temperature spans -25 °C to 90 °C. The gearbox is lubricated for life, meaning no oil-change interval in the 30,000-hour service window. Housing is black anodized aluminium; the shaft is C45 steel.","metaTitle":"Schneider Electric GBX0800080551F Planetary Gearbox, 8:1","metaDescription":"Schneider Electric GBX0800080551F planetary gearbox, 8:1 ratio, 50 N.m continuous torque, 94% efficiency. Obsolete — sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Gear Reducers & Gearboxes"],"specifications":{"Efficiency":"94 %","Noise level":"60 dB 1 m, no-load","Gear box type":"Straight teeth","Housing Colour":"Black","Shaft material":"C 45","Reduction ratio":"8:1","lifecycle_stage":"current","Housing material":"Black anodized aluminium","Device short name":"GBX","Compatibility code":"GBX","Torsional rigidity":"6 N.m/arcmin","Maximum output torque":"708.06 lbf.in (80 N.m) 100 rpm 86 °F (30 °C)","Nbr. of units in pkg.":"1","Service life in hours":"30000 h 100 rpm 86 °F (30 °C)","Additional information":"Lubricated for life","Maximum axial force Fa":"1200 N 100 rpm, during 10000 hour at 30°C 900 N 100 rpm, during 30000 hour at 30°C","IP Degree of Protection":"Shaft output IP54","Maximum radial force Fr":"650 N 100 rpm, force applied at mid-distance from output shaft during 30000 hour at 30 °C 950 N 100 rpm, force applied at mid-distance from output shaft during 10000 hour at 30 °C","Continuous output torque":"442.5 lbf.in (50 N.m) 100 rpm 86 °F (30 °C)","Gearbox external diameter":"3.1 in (80 mm)","Product or Component Type":"Planetary gearbox","Maximum torsional backlash":"9 arc.min","Ambient Temperature For Operation":"-13...194 °F (-25...90 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3d72bbe9c20ccce6b82a0db453ea5deb.pdf","sourceUrl":"https://www.se.com/uk/en/product/GBX0800080551F/gearbox-with-straight-teeth-gbx-ø-80-mm-reduction-81-9arcmin-50-n-m/","alternativesUrl":"https://aoctrl.com/api/mcp/products/GBX0800080551F/alternatives.json"},"ai":{"faq":[{"question":"What is the continuous torque rating of the GBX0800080551F?","answer":"The continuous output torque is 50 N.m at 100 rpm and 30 °C. The maximum intermittent torque is 80 N.m under the same conditions. The 50 N.m figure is the design-in value for continuous-duty axes."},{"question":"What is the backlash specification on this gearbox?","answer":"Maximum torsional backlash is 9 arcmin. This is the lost motion at reversal — if your positioning budget is tighter than 9 arcmin, this gearbox will add that uncertainty to the axis repeatability."},{"question":"What axial and radial loads can the output shaft handle?","answer":"Maximum axial force (Fa) is 1200 N for 10,000-hour life at 100 rpm and 30 °C, derated to 900 N for 30,000 hours. Maximum radial force (Fr) is 950 N for 10,000 hours, derated to 650 N for 30,000 hours, measured at mid-distance from the output shaft."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/GBX0800080551F","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/GBX0800080551F when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}