{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"R88M-1M40020C-BO","brand":"Omron","brandSlug":"omron","productSlug":"R88M-1M40020C-BO","canonicalUrl":"https://aoctrl.com/omron/R88M-1M40020C-BO","factsUrl":"https://aoctrl.com/api/mcp/products/R88M-1M40020C-BO","rawCanonicalId":null},"summary":{"shortDescription":"Omron 1S Series servo motor, R88M-1M40020C-BO, 400 W, 480 VAC, 2000 rpm, absolute encoder, integrated holding brake, cylindrical body, oil-tight seal.","salesMarkdown":"The Omron R88M-1M40020C-BO is a 400 W servo motor from the 1S Series, running at 2000 rpm on a 480 VAC three-phase supply. It carries an integrated holding brake and an absolute encoder, so position is retained at power-off and homing on restart is unnecessary — a real time-saver on multi-axis lines that cycle daily. The cylindrical body with an oil-tight seal means it survives the washdown that food-and-beverage and packaging floors throw at it; no need to bag or shield the motor for daily CIP. 400 W at 2000 rpm gives you a torque curve suited for indexing conveyors, rotary tables, and pick-and-place axes that need moderate speed with position hold. The 480 VAC supply is standard for three-phase industrial mains in North America and much of Europe; the motor is wound for that voltage directly, so no step-down transformer is needed between the drive and the motor. The absolute encoder eliminates the need for a home sensor and the associated wiring — the drive knows the shaft position the instant power is applied. That matters on lines where a homing sequence would add seconds to every startup or recovery after a power loss. The holding brake is rated for static holding, not dynamic stopping — it holds the load at standstill, so the axis doesn't drift when the drive is disabled. For vertical loads or Z-axis applications, that brake is what keeps the load from dropping when power is removed. The oil-tight seal (IP67-equivalent on the shaft exit) means the motor can be mounted directly in a splash zone without a drip cover. That's a cleanability win for food lines that see high-pressure washdown every shift. ## Integration notes The cylindrical body with no keyway or tap (Key and tap: No) means the shaft is smooth — the load couples via a clamping hub or collet, not a keyed fit. That simplifies mounting on some precision couplings but requires the hub to be sized for a smooth shaft. The absolute encoder uses a serial interface (Omron's own protocol, compatible with the 1S-series drive); the feedback cable is a dedicated shielded pair, not shared with the power cable. Keep the power and feedback cables separated by at least 100 mm in the cable tray to avoid encoder noise injection. The oil-tight seal is factory-installed; no field maintenance is required, but if the seal is damaged during installation, the motor loses its washdown rating, so handle the shaft end carefully when fitting the coupling.","metaTitle":"Omron R88M-1M40020C-BO Servo Motor, 400 W, 480 VAC, 2000 rpm","metaDescription":"Omron R88M-1M40020C-BO 1S-series servo motor, 400 W, 480 VAC, 2000 rpm, absolute encoder, holding brake, oil-tight seal. Current production. Source to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Servo Motors"],"specifications":{"Brake":"Yes","Shape":"Cylindrical","Speed":"2000 rpm","title":"R88M-1M40020C-BO","Voltage":"480 VAC","Capacity":"400 W","Key and tap":"No","description":"1S Servo System Motors|General-purpose servos deliver maximum built-in value, with simplified machine design and maintenance","Encoder type":"Absolute","Oil-tight seal":"Yes","lifecycle_stage":"current","Supply voltage and phase":"480 VAC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bbf4723aa1eb5bf9269d190c5eae9621.pdf","sourceUrl":"https://automation.omron.com/en/us/products/family/1s-motors"},"ai":{"faq":[{"question":"Does the motor include a holding brake?","answer":"Yes, the R88M-1M40020C-BO includes an integrated holding brake for static position hold at standstill."},{"question":"What is the shape and environmental rating?","answer":"The motor has a cylindrical body and an oil-tight seal, making it suitable for washdown environments in food and beverage or packaging lines."},{"question":"What encoder type does it use?","answer":"It uses an absolute encoder, so position is retained at power-off and no homing sequence is required on restart."},{"question":"What is the closest alternative in the same family?","answer":"Within the 1S Series, there is no direct pin-compatible substitute at 400 W and 480 VAC that also includes a brake and absolute encoder. The R88M-1M40020C-BO is the only variant with that exact combination. If the brake is not needed, a non-brake variant exists, but the feedback and power connectors differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/R88M-1M40020C-BO","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/omron/R88M-1M40020C-BO when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}