{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"GBX0400121003F","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"GBX0400121003F","canonicalUrl":"https://aoctrl.com/schneider/GBX0400121003F","factsUrl":"https://aoctrl.com/api/mcp/products/GBX0400121003F","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric GBX0400121003F planetary gearbox, straight teeth, 40 mm diameter, 12:1 reduction, 20 N.m continuous torque, 28 arcmin backlash, 94 % efficiency, IP54 shaft output.","salesMarkdown":"## Obsolete — what that means for procurement Schneider Electric lists the GBX0400121003F as obsolete. This gearbox is sourced through independent surplus and broker channels. ## 12:1 ratio, 20 N.m — load capacity and duty The GBX0400121003F is a 40 mm-diameter planetary gearbox with a 12:1 reduction ratio. Continuous output torque is 20 N.m at 100 rpm and 30 °C — this is the rated load for a 30000-hour service life under those conditions. Efficiency is 94 %, meaning about 6 % of input power is lost as heat in the gear train. That loss is already accounted for in the torque rating, but it matters for thermal budgeting in a confined enclosure. Maximum torsional backlash is 28 arcmin — this is the angular play between input and output when reversing direction. For positioning applications that need tighter repeatability, a lower-backlash gearbox would be needed. ## Mounting, sealing, and environmental limits The housing is black anodized aluminium with a 40 mm external diameter. Shaft output sealing is IP54 — splash-resistant but not submersible; suitable for indoor or sheltered installations where occasional moisture or dust is present. The gearbox is lubricated for life, so no periodic oil changes are required — the grease fill is sealed for the service interval. Maximum axial force on the output shaft is 200 N at 100 rpm; maximum radial force is 200 N at 100 rpm (force applied at mid-span). These limits drop to 160 N radial if targeting the full 30000-hour life. Exceeding these loads shortens bearing life. ## Noise, stiffness, and shaft material Noise level is 55 dB at 1 m, no-load — roughly the sound of a quiet office. Straight-cut teeth are inherently noisier than helical, but the 55 dB figure is low enough for most machine-tool and conveyor applications. Torsional rigidity is 1.1 N.m per arcmin — a measure of how much the gear train twists under load. Higher stiffness means less wind-up in servo or positioning axes. Shaft material is C45 carbon steel — a standard medium-carbon grade with good strength and wear resistance for general industrial use.","metaTitle":"Schneider Electric GBX0400121003F Planetary Gearbox, 12:1","metaDescription":"Schneider Electric GBX0400121003F planetary gearbox, 12:1 ratio, 20 N.m continuous torque, 94% efficiency. Obsolete — sourced to order via independent channels.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Gear Reducers & Gearboxes"],"specifications":{"Efficiency":"94 %","Noise level":"55 dB 1 m, no-load","Gear box type":"Straight teeth","Housing Colour":"Black","Shaft material":"C 45","Reduction ratio":"12:1","lifecycle_stage":"current","Housing material":"Black anodized aluminium","Device short name":"GBX","Compatibility code":"GBX","Torsional rigidity":"1.1 N.m/arcmin","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":"200 N 100 rpm, during 10000 hour at 30°C","IP Degree of Protection":"Shaft output IP54","Maximum radial force Fr":"200 N 100 rpm, force applied at mid-distance from output shaft during 10000 hour at 30 °C 160 N 100 rpm, force applied at mid-distance from output shaft during 30000 hour at 30 °C","Continuous output torque":"177.01 lbf.in (20 N.m) 100 rpm 86 °F (30 °C)","Gearbox external diameter":"1.6 in (40 mm)","Product or Component Type":"Planetary gearbox","Maximum torsional backlash":"28 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/5134ee9c92499e5dab2a292487d85c67.pdf","sourceUrl":"https://www.se.com/nz/en/product/GBX0400121003F/gearbox-with-straight-teeth-gbx-ø-40-mm-reduction-121-28arcmin-20-n-m/","alternativesUrl":"https://aoctrl.com/api/mcp/products/GBX0400121003F/alternatives.json"},"ai":{"faq":[{"question":"What is GBX0400121003F's continuous torque rating?","answer":"Continuous output torque is 20 N.m at 100 rpm and 30 °C, which supports a 30000-hour service life under those conditions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/GBX0400121003F","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/GBX0400121003F 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}}