{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"GBX1200250551F","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"GBX1200250551F","canonicalUrl":"https://aoctrl.com/schneider/GBX1200250551F","factsUrl":"https://aoctrl.com/api/mcp/products/GBX1200250551F","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric GBX1200250551F planetary gearbox, straight teeth, 120 mm diameter, 25:1 reduction, 230 N.m continuous torque, 94% efficiency, 65 dB noise, IP54 shaft output.","salesMarkdown":"## 25:1 reduction, 230 N.m continuous — what it delivers The GBX1200250551F is a planetary gearbox from Schneider Electric's GBX family, with a 25:1 reduction ratio and a continuous output torque of 230 N.m at 100 rpm (30 °C ambient). That torque rating is the figure to size against your driven load — the maximum output torque is 368 N.m under the same conditions, but continuous duty stays at 230 N.m. Efficiency is listed at 94 %, which means about 6 % of the input power is lost as heat. For a motor in the 1–2 kW range, that heat is manageable with natural convection through the black anodized aluminium housing. Noise level is 65 dB at 1 m, no-load — a straight-tooth planetary at this ratio is inherently noisier than a helical, so if the gearbox sits near an operator station, budget for an enclosure or acoustic treatment. ## Load limits and service life — plan the duty cycle Service life is 30,000 hours at 100 rpm and 30 °C ambient — that's about 3.4 years of continuous running. The gearbox is lubricated for life, so no oil changes are needed within that window. Maximum radial force on the output shaft is 1500 N at 100 rpm for the 30,000-hour life, or 2000 N if you accept a 10,000-hour life. Axial force limits are 2100 N and 2800 N respectively. These are the numbers to check if the load applies side or thrust loads — belt drives or overhung pinions need derating. Torsional backlash is 12 arc.min maximum — acceptable for general positioning but not for precision indexing without a separate encoder. Torsional rigidity is 13 N.m/arcmin, so the shaft twist under full torque is about 28 arc.min. ## Obsolete — sourcing through independent channels Schneider Electric lists the GBX1200250551F as obsolete. No official successor is recorded — the GBX series has been replaced by newer planetary families with different mounting dimensions and ratios. Quantities are confirmed at RFQ; no stock-holding claim is made here. The IP54 shaft output and straight-tooth design mean the replacement will likely be a different frame size — a board or bracket spin may be required.","metaTitle":"Schneider Electric GBX1200250551F Planetary Gearbox, 25:1","metaDescription":"Schneider Electric GBX1200250551F planetary gearbox, 25:1 ratio, 230 N.m continuous torque, 94% efficiency, 65 dB noise.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Gear Reducers & Gearboxes"],"specifications":{"Efficiency":"94 %","Noise level":"65 dB 1 m, no-load","Gear box type":"Straight teeth","Housing Colour":"Black","Shaft material":"C 45","Reduction ratio":"25:1","lifecycle_stage":"current","Housing material":"Black anodized aluminium","Device short name":"GBX","Compatibility code":"GBX","Torsional rigidity":"13 N.m/arcmin","Maximum output torque":"3257.07 lbf.in (368 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":"2100 N 100 rpm, during 30000 hour at 30°C 2800 N 100 rpm, during 10000 hour at 30°C","IP Degree of Protection":"Shaft output IP54","Maximum radial force Fr":"1500 N 100 rpm, force applied at mid-distance from output shaft during 30000 hour at 30 °C 2000 N 100 rpm, force applied at mid-distance from output shaft during 10000 hour at 30 °C","Continuous output torque":"2035.7 lbf.in (230 N.m) 100 rpm 86 °F (30 °C)","Gearbox external diameter":"4.7 in (120 mm)","Product or Component Type":"Planetary gearbox","Maximum torsional backlash":"12 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/674e4a8eb5fcde13e3ae729d51a6977c.pdf","sourceUrl":"https://www.se.com/us/en/product/GBX1200250551F/gearbox-with-straight-teeth-gbx-ø-120-mm-reduction-251-12arcmin-230-n-m/","alternativesUrl":"https://aoctrl.com/api/mcp/products/GBX1200250551F/alternatives.json"},"ai":{"faq":[{"question":"What is the continuous torque rating of GBX1200250551F?","answer":"Continuous output torque is 230 N.m at 100 rpm and 30 °C ambient. Maximum output torque is 368 N.m under the same conditions."},{"question":"What is the noise level of this gearbox?","answer":"Noise level is 65 dB at 1 m, no-load. The straight-tooth design contributes to this level — expect slightly higher noise under load."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/GBX1200250551F","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/GBX1200250551F 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}}