{ "targets": { "peak_torque_nm": 40, "speed_rpm": null, "voltage_v": 48, "max_mass_g": null, "qty": 1 }, "off_the_shelf": [ { "route": "off-the-shelf", "checks": { "peak_torque": "pass", "voltage": "pass", "mass": "not asked", "speed": "not asked" }, "parts": [ { "role": "joint actuator", "id": "ac-robstride-rs03", "name": "RobStride RS03 QDD Joint Actuator", "brand": "RobStride", "unit_usd": 140.7, "price_as_of": "2026-10-29", "mass_g": 900, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-robstride-rs03/", "peak_torque_nm": 60, "ratio": 9 } ], "totals": { "unit_usd_listed": 140.7, "order_usd_listed": 140.7, "parts_needing_quote": [], "mass_g_listed": 900, "parts_without_mass": [], "lead_times": { "joint actuator": "unknown" }, "origins": [ "CN" ] } }, { "route": "off-the-shelf", "checks": { "peak_torque": "pass", "voltage": "pass", "mass": "not asked", "speed": "not asked" }, "parts": [ { "role": "joint actuator", "id": "ac-robstride-rs04", "name": "RobStride RS04 QDD Joint Actuator", "brand": "RobStride", "unit_usd": 168.87, "price_as_of": "2026-10-29", "mass_g": 1420, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-robstride-rs04/", "peak_torque_nm": 120, "ratio": 9 } ], "totals": { "unit_usd_listed": 168.87, "order_usd_listed": 168.87, "parts_needing_quote": [], "mass_g_listed": 1420, "parts_without_mass": [], "lead_times": { "joint actuator": "unknown" }, "origins": [ "CN" ] } }, { "route": "off-the-shelf", "checks": { "peak_torque": "pass", "voltage": "pass", "mass": "not asked", "speed": "not asked" }, "parts": [ { "role": "joint actuator", "id": "ac-robstride-rs10p", "name": "RobStride 10P QDD Joint Actuator", "brand": "RobStride", "unit_usd": 215, "price_as_of": "2026-10-30", "mass_g": 460, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-robstride-rs10p/", "peak_torque_nm": 42, "ratio": 25 } ], "totals": { "unit_usd_listed": 215, "order_usd_listed": 215, "parts_needing_quote": [], "mass_g_listed": 460, "parts_without_mass": [], "lead_times": { "joint actuator": "unknown" }, "origins": [ "CN" ] } }, { "route": "off-the-shelf", "checks": { "peak_torque": "pass", "voltage": "pass", "mass": "not asked", "speed": "not asked" }, "parts": [ { "role": "joint actuator", "id": "ac-eyou-rp70h", "name": "EYOU RP70H Planetary Joint Module", "brand": "EYOU", "unit_usd": 270, "price_as_of": "2026-10-30", "mass_g": 760, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-eyou-rp70h/", "peak_torque_nm": 60, "ratio": 19.5278 } ], "totals": { "unit_usd_listed": 270, "order_usd_listed": 270, "parts_needing_quote": [], "mass_g_listed": 760, "parts_without_mass": [], "lead_times": { "joint actuator": "unknown" }, "origins": [ "CN" ] } }, { "route": "off-the-shelf", "checks": { "peak_torque": "pass", "voltage": "pass", "mass": "not asked", "speed": "not asked" }, "parts": [ { "role": "joint actuator", "id": "ac-leadshine-pj3-75can42", "name": "Leadshine PJ3-75CAN42 Planetary Integrated Actuator", "brand": "Leadshine", "unit_usd": 399, "price_as_of": "2026-10-29", "mass_g": 800, "lead_time": "1-2 weeks to ship after order confirmation (store page, 2026-10-29)", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-leadshine-pj3-75can42/", "peak_torque_nm": 42, "ratio": 20 } ], "totals": { "unit_usd_listed": 399, "order_usd_listed": 399, "parts_needing_quote": [], "mass_g_listed": 800, "parts_without_mass": [], "lead_times": { "joint actuator": "1-2 weeks to ship after order confirmation (store page, 2026-10-29)" }, "origins": [ "CN" ] } } ], "built_from_parts": [ { "route": "built from parts", "checks": { "output_peak_torque": "pass (43.2 N·m = 2.4 × 20 × 0.9 efficiency)", "output_speed": "not asked", "voltage": "pass", "mass": "not asked", "motor_reducer_diameter": "pass (motor OD 73.8 mm, reducer 61 mm)", "shaft": "rotor bore 32 mm, reducer input bore 14 mm (stepped shaft)", "through_bore": "no through-bore", "output_bearing": "planetary gearhead has its own output bearings; add a crossed roller only for high tilting loads", "envelope": "about 73.8 mm diameter, 149 mm motor + reducer length before housing" }, "parts": [ { "role": "motor", "id": "mo-cubemars-ro60-kv115", "name": "CubeMars RO60 KV115 Frameless Outrunner Torque Motor", "brand": "CubeMars", "unit_usd": 77.9, "price_as_of": "2026-10-30", "mass_g": 248, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/mo-cubemars-ro60-kv115/", "peak_torque_nm": 2.4, "kt": 0.094, "kt_basis": "listed" }, { "role": "reducer", "id": "ac-zd-60af-020", "name": "Zhongda Leader 60AF Helical Planetary Gearbox, 20:1", "brand": "Zhongda Leader (ZD)", "unit_usd": null, "price_as_of": null, "mass_g": 1200, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-zd-60af-020/", "ratio": 20, "type": "planetary" }, { "role": "driver", "id": "mo-steadywin-gds68", "name": "SteadyWin GDS68 Joint Motor Driver Board (SDC104)", "brand": "SteadyWin", "unit_usd": 33.99, "price_as_of": "2026-10-30", "mass_g": null, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/mo-steadywin-gds68/", "voltage_v": 48, "cont_current_a": 15 }, { "role": "encoder", "id": "ac-magntek-mt6701ct-std", "name": "MagnTek MT6701 14-bit Hall Magnetic Angle Sensor IC", "brand": "MagnTek (NOVOSENSE)", "unit_usd": 1.43, "price_as_of": "2026-10-30", "mass_g": null, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-magntek-mt6701ct-std/", "resolution_bits": 14 } ], "totals": { "unit_usd_listed": 113.32, "order_usd_listed": 113.32, "parts_needing_quote": [ "reducer" ], "mass_g_listed": 1448, "parts_without_mass": [ "driver", "encoder" ], "lead_times": { "motor": "unknown", "reducer": "unknown", "driver": "unknown", "encoder": "unknown" }, "origins": [ "CN" ] } }, { "route": "built from parts", "checks": { "output_peak_torque": "pass (52.3 N·m = 0.82 × 75 × 0.85 efficiency)", "output_speed": "not asked", "voltage": "pass", "mass": "not asked", "motor_reducer_diameter": "pass (motor OD 43 mm, reducer 70 mm)", "shaft": "rotor bore 27.5 mm, reducer input bore 11 mm (stepped shaft)", "through_bore": "unknown", "output_bearing": "candidate RB3010: bore 30 mm, OD 55 mm inside a 70 mm envelope, 7.35 kN dynamic; check against your housing and load", "envelope": "about 70 mm diameter, 56 mm motor + reducer length before housing" }, "parts": [ { "role": "motor", "id": "mo-leadshine-fm2-04308", "name": "Leadshine FM2-04308KTN376 Frameless Motor", "brand": "Leadshine", "unit_usd": 89, "price_as_of": "2026-11-03", "mass_g": 54, "lead_time": "1-2 weeks for shipment after order confirmation (store page)", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/mo-leadshine-fm2-04308/", "peak_torque_nm": 0.82, "kt": 0.099, "kt_basis": "listed" }, { "role": "reducer", "id": "ac-spinea-ts70-75-tb", "name": "Spinea TwinSpin TS 70 Cycloidal Reduction Bearing (T series)", "brand": "Spinea", "unit_usd": null, "price_as_of": null, "mass_g": 1050, "lead_time": "unknown", "origin": "SK", "url": "https://maglev-parts.pages.dev/p/ac-spinea-ts70-75-tb/", "ratio": 75, "type": "cycloidal" }, { "role": "driver", "id": "mo-steadywin-gds68", "name": "SteadyWin GDS68 Joint Motor Driver Board (SDC104)", "brand": "SteadyWin", "unit_usd": 33.99, "price_as_of": "2026-10-30", "mass_g": null, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/mo-steadywin-gds68/", "voltage_v": 48, "cont_current_a": 15 }, { "role": "encoder", "id": "ac-magntek-mt6701ct-std", "name": "MagnTek MT6701 14-bit Hall Magnetic Angle Sensor IC", "brand": "MagnTek (NOVOSENSE)", "unit_usd": 1.43, "price_as_of": "2026-10-30", "mass_g": null, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-magntek-mt6701ct-std/", "resolution_bits": 14 }, { "role": "output bearing", "id": "ac-zys-rb3010", "name": "ZYS RB3010 Crossed Roller Bearing (30 x 55 x 10 mm)", "brand": "ZYS", "unit_usd": 9.5, "price_as_of": "2026-10-30", "mass_g": null, "lead_time": "10-40 days depending on model and quantity (supplier FAQ)", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-zys-rb3010/", "bore_mm": 30, "od_mm": 55 } ], "totals": { "unit_usd_listed": 133.92, "order_usd_listed": 133.92, "parts_needing_quote": [ "reducer" ], "mass_g_listed": 1104, "parts_without_mass": [ "driver", "encoder", "output bearing" ], "lead_times": { "motor": "1-2 weeks for shipment after order confirmation (store page)", "reducer": "unknown", "driver": "unknown", "encoder": "unknown", "output bearing": "10-40 days depending on model and quantity (supplier FAQ)" }, "origins": [ "CN", "SK" ] } }, { "route": "built from parts", "checks": { "output_peak_torque": "pass (45 N·m = 2.5 × 20 × 0.9 efficiency)", "output_speed": "not asked", "voltage": "pass", "mass": "not asked", "motor_reducer_diameter": "pass (motor OD 50 mm, reducer 61 mm)", "shaft": "rotor bore 30 mm, reducer input bore 14 mm (stepped shaft)", "through_bore": "no through-bore", "output_bearing": "planetary gearhead has its own output bearings; add a crossed roller only for high tilting loads", "envelope": "about 61 mm diameter, 149 mm motor + reducer length before housing" }, "parts": [ { "role": "motor", "id": "mo-leadshine-fm2-05014", "name": "Leadshine FM2-05014KTN346 Frameless Motor", "brand": "Leadshine", "unit_usd": 109, "price_as_of": "2026-11-03", "mass_g": 136, "lead_time": "1-2 weeks for shipment after order confirmation (store page)", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/mo-leadshine-fm2-05014/", "peak_torque_nm": 2.5, "kt": 0.141, "kt_basis": "listed" }, { "role": "reducer", "id": "ac-zd-60af-020", "name": "Zhongda Leader 60AF Helical Planetary Gearbox, 20:1", "brand": "Zhongda Leader (ZD)", "unit_usd": null, "price_as_of": null, "mass_g": 1200, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-zd-60af-020/", "ratio": 20, "type": "planetary" }, { "role": "driver", "id": "mo-steadywin-gds68", "name": "SteadyWin GDS68 Joint Motor Driver Board (SDC104)", "brand": "SteadyWin", "unit_usd": 33.99, "price_as_of": "2026-10-30", "mass_g": null, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/mo-steadywin-gds68/", "voltage_v": 48, "cont_current_a": 15 }, { "role": "encoder", "id": "ac-magntek-mt6701ct-std", "name": "MagnTek MT6701 14-bit Hall Magnetic Angle Sensor IC", "brand": "MagnTek (NOVOSENSE)", "unit_usd": 1.43, "price_as_of": "2026-10-30", "mass_g": null, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-magntek-mt6701ct-std/", "resolution_bits": 14 } ], "totals": { "unit_usd_listed": 144.42, "order_usd_listed": 144.42, "parts_needing_quote": [ "reducer" ], "mass_g_listed": 1336, "parts_without_mass": [ "driver", "encoder" ], "lead_times": { "motor": "1-2 weeks for shipment after order confirmation (store page)", "reducer": "unknown", "driver": "unknown", "encoder": "unknown" }, "origins": [ "CN" ] } }, { "route": "built from parts", "checks": { "output_peak_torque": "pass (48.2 N·m = 2.68 × 20 × 0.9 efficiency)", "output_speed": "not asked", "voltage": "pass", "mass": "not asked", "motor_reducer_diameter": "pass (motor OD 76 mm, reducer 61 mm)", "shaft": "rotor bore 38 mm, reducer input bore 14 mm (stepped shaft)", "through_bore": "no through-bore", "output_bearing": "planetary gearhead has its own output bearings; add a crossed roller only for high tilting loads", "envelope": "about 76 mm diameter, 150 mm motor + reducer length before housing" }, "parts": [ { "role": "motor", "id": "mo-cubemars-ri70-kv95", "name": "CubeMars RI70 KV95 Frameless Inrunner Torque Motor", "brand": "CubeMars", "unit_usd": 123.9, "price_as_of": "2026-10-30", "mass_g": 270.4, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/mo-cubemars-ri70-kv95/", "peak_torque_nm": 2.68, "kt": 0.13, "kt_basis": "listed" }, { "role": "reducer", "id": "ac-zd-60af-020", "name": "Zhongda Leader 60AF Helical Planetary Gearbox, 20:1", "brand": "Zhongda Leader (ZD)", "unit_usd": null, "price_as_of": null, "mass_g": 1200, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-zd-60af-020/", "ratio": 20, "type": "planetary" }, { "role": "driver", "id": "mo-steadywin-gds68", "name": "SteadyWin GDS68 Joint Motor Driver Board (SDC104)", "brand": "SteadyWin", "unit_usd": 33.99, "price_as_of": "2026-10-30", "mass_g": null, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/mo-steadywin-gds68/", "voltage_v": 48, "cont_current_a": 15 }, { "role": "encoder", "id": "ac-magntek-mt6701ct-std", "name": "MagnTek MT6701 14-bit Hall Magnetic Angle Sensor IC", "brand": "MagnTek (NOVOSENSE)", "unit_usd": 1.43, "price_as_of": "2026-10-30", "mass_g": null, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-magntek-mt6701ct-std/", "resolution_bits": 14 } ], "totals": { "unit_usd_listed": 159.32, "order_usd_listed": 159.32, "parts_needing_quote": [ "reducer" ], "mass_g_listed": 1470, "parts_without_mass": [ "driver", "encoder" ], "lead_times": { "motor": "unknown", "reducer": "unknown", "driver": "unknown", "encoder": "unknown" }, "origins": [ "CN" ] } }, { "route": "built from parts", "checks": { "output_peak_torque": "pass (44.6 N·m = 0.7 × 75 × 0.85 efficiency)", "output_speed": "not asked", "voltage": "pass", "mass": "not asked", "motor_reducer_diameter": "pass (motor OD 52 mm, reducer 70 mm)", "shaft": "rotor bore 23 mm, reducer input bore 11 mm (stepped shaft)", "through_bore": "unknown", "output_bearing": "candidate RB3010: bore 30 mm, OD 55 mm inside a 70 mm envelope, 7.35 kN dynamic; check against your housing and load", "envelope": "about 70 mm diameter, 60 mm motor + reducer length before housing" }, "parts": [ { "role": "motor", "id": "mo-mticore-52lw01", "name": "MTICore 52LW01 Frameless Torque Motor (48 V)", "brand": "MTICore", "unit_usd": 128.83, "price_as_of": "2026-10-30", "mass_g": 131.3, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/mo-mticore-52lw01/", "peak_torque_nm": 0.7, "kt": null, "kt_basis": "unknown" }, { "role": "reducer", "id": "ac-spinea-ts70-75-tb", "name": "Spinea TwinSpin TS 70 Cycloidal Reduction Bearing (T series)", "brand": "Spinea", "unit_usd": null, "price_as_of": null, "mass_g": 1050, "lead_time": "unknown", "origin": "SK", "url": "https://maglev-parts.pages.dev/p/ac-spinea-ts70-75-tb/", "ratio": 75, "type": "cycloidal" }, { "role": "driver", "id": "mo-steadywin-gds68", "name": "SteadyWin GDS68 Joint Motor Driver Board (SDC104)", "brand": "SteadyWin", "unit_usd": 33.99, "price_as_of": "2026-10-30", "mass_g": null, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/mo-steadywin-gds68/", "voltage_v": 48, "cont_current_a": 15 }, { "role": "encoder", "id": "ac-magntek-mt6701ct-std", "name": "MagnTek MT6701 14-bit Hall Magnetic Angle Sensor IC", "brand": "MagnTek (NOVOSENSE)", "unit_usd": 1.43, "price_as_of": "2026-10-30", "mass_g": null, "lead_time": "unknown", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-magntek-mt6701ct-std/", "resolution_bits": 14 }, { "role": "output bearing", "id": "ac-zys-rb3010", "name": "ZYS RB3010 Crossed Roller Bearing (30 x 55 x 10 mm)", "brand": "ZYS", "unit_usd": 9.5, "price_as_of": "2026-10-30", "mass_g": null, "lead_time": "10-40 days depending on model and quantity (supplier FAQ)", "origin": "CN", "url": "https://maglev-parts.pages.dev/p/ac-zys-rb3010/", "bore_mm": 30, "od_mm": 55 } ], "totals": { "unit_usd_listed": 173.75, "order_usd_listed": 173.75, "parts_needing_quote": [ "reducer" ], "mass_g_listed": 1181, "parts_without_mass": [ "driver", "encoder", "output bearing" ], "lead_times": { "motor": "unknown", "reducer": "unknown", "driver": "unknown", "encoder": "unknown", "output bearing": "10-40 days depending on model and quantity (supplier FAQ)" }, "origins": [ "CN", "SK" ] } } ], "method": "Built joints: motor peak torque × ratio × efficiency (strain wave 0.75, cycloidal 0.85, planetary 0.9) must reach the target, capped at 3× to avoid oversizing. Output bearing: cheapest listed crossed roller whose bore clears the reducer through-bore and whose OD is 0.6–1.15× the motor/reducer envelope. Output speed estimate = V / Kt × 0.7 / ratio. Prices are listed catalog prices; parts without one need a quote (use build_rfq). Lead times are shown only where a dated maker or seller page states them.", "next": "Use landed_cost for China vs US duty on any part, get_test_protocol for how to verify the built joint, build_rfq to request quotes." }