Overview
The RCDrone TDN045 Servo Electric Cylinder is a 45-series servo linear actuator designed for precise push/pull motion in automation equipment. It supports direct-coupled and 45° foldback mounting styles, uses a precision planetary gearbox for high torque and stable motion, and is built around a Ø12 mm ball screw with 4 mm or 5 mm lead options. The rod end features an M12×1.25 interface, with external or internal thread choices. Based on the provided selection tables, the actuator can be configured for up to 1.00 kN rated output (100 kg) and speeds up to 250 mm/s depending on lead, motor, and gear ratio.
Key Features
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Two installation styles: Direct coupling and 45° foldback
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Precision planetary gearbox: high accuracy and higher torque output
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Precision ball screw: described as imported, with ±2 “si” accuracy (±0.02 mm) in the materials
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Rod end thread options: external thread or internal thread
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Multiple drive choices: servo motor or stepper motor configurations with selectable gear ratios
Specifications (from the provided images)
| Item | Spec |
|---|---|
| Series | TDN045 |
| Actuator type | Servo electric cylinder / linear actuator |
| Ball screw diameter | Ø12 mm |
| Ball screw lead options | 4 mm / 5 mm |
| Ball screw nut | BSH-3.5 type noted in table |
| Mounting styles | Direct coupling / 45° foldback |
| Rod diameter (shown) | 19 mm |
| Rod end thread (shown) | M12×1.25 |
| Body section (shown) | 45×45 mm |
Motor & Gearbox Options (from selection tables)
| Drive option | Rated speed | Rated torque | Notes |
|---|---|---|---|
| Servo motor 0.1 kW (40 frame noted) | 3000 r/min | 0.32 N·m | Used in lead 4 / lead 5 tables |
| Servo motor 0.4 kW (60 frame noted) | 3000 r/min | 1.27 N·m | Used in lead 4 / lead 5 tables |
| Stepper motor (size 60, body length 60) | 600 r/min | 0.8 N·m | Used in lead 4 / lead 5 tables |
| Planetary gearbox ratios | 1 / 3 / 5 / 7 / 10 / 12 / 15 / 20 | 1-stage: 1–10, 2-stage: 12–20 |
Rated Output & Speed Selection (from the provided tables)
Lead 4 mm (Ø12 screw)
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Max dynamic load shown: 451 kg
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Max thrust shown: 100 kg (table header)
Servo 3000 r/min – Speed (mm/s) by ratio
| Ratio | 1 | 3 | 5 | 7 | 10 | 12 | 15 | 20 |
|---|---|---|---|---|---|---|---|---|
| Speed (mm/s) | 200 | 67 | 40 | 29 | 20 | 17 | 13 | 10 |
Rated output shown (examples)
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Servo 0.1 kW: 0.43 kN / 43 kg at ratio 1; 1.00 kN / 100 kg at ratios 3–20
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Servo 0.4 kW: 1.00 kN / 100 kg at ratios 1–20
Stepper 600 r/min – Speed (mm/s) by ratio
| Ratio | 1 | 3 | 5 | 7 | 10 | 12 | 15 | 20 |
|---|---|---|---|---|---|---|---|---|
| Speed (mm/s) | 40 | 13 | 8 | 6 | 4 | 3 | 3 | 2 |
| Rated output shown: 1.00 kN / 100 kg at ratios 1–20 |
Lead 5 mm (Ø12 screw)
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Max dynamic load shown: 661 kg
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Max thrust shown: 300 kg (table header)
Servo 3000 r/min – Speed (mm/s) by ratio
| Ratio | 1 | 3 | 5 | 7 | 10 | 12 | 15 | 20 |
|---|---|---|---|---|---|---|---|---|
| Speed (mm/s) | 250 | 83 | 50 | 36 | 25 | 21 | 17 | 13 |
Rated output shown (examples)
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Servo 0.1 kW: 0.34 kN / 34 kg at ratio 1; 1.00 kN / 100 kg at ratios 3–20
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Servo 0.4 kW: 1.00 kN / 100 kg at ratios 1–20
Stepper 600 r/min – Speed (mm/s) by ratio
| Ratio | 1 | 3 | 5 | 7 | 10 | 12 | 15 | 20 |
|---|---|---|---|---|---|---|---|---|
| Speed (mm/s) | 50 | 17 | 10 | 7 | 5 | 4 | 3 | 3 |
| Rated output shown: 0.85 kN / 85 kg at ratio 1; 1.00 kN / 100 kg at ratios 3–20 |
Dimensions (from the drawings)
Rod-end interface (shown)
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Thread: M12×1.25
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Rod diameter: 19 mm
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Diameters shown near the front: Ø22, Ø32
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Key front offsets shown: 45.5 mm, 25 mm, 20 mm
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Rear/base details shown on foldback drawing: 12 mm, 40 mm, base width 60 mm
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Foldback drawing shows an overall height dimension: 140 mm
Overall length formula (stroke-dependent, mm)
| Version | Key length callouts (mm) |
|---|---|
| 45° foldback | 100 + stroke, 192 + stroke, 237 + stroke |
| Direct coupling | 100 + stroke, 206.5 + stroke, 257 + stroke |
Typical Applications
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Automated fixtures, clamping, pushing/pulling, and positioning
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Pressing, assembling, feeding, transferring, and pick-and-place auxiliary axes
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Test benches requiring repeatable linear motion
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Equipment upgrades replacing pneumatic cylinders where programmable motion is needed
Customization & Support
Need a specific stroke, gear ratio, motor type, or thread end for your project? Contact support@rcdrone.top with your target load, speed, and stroke requirements.
What’s Included
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1× RCDrone TDN045 Servo Electric Cylinder / Linear Actuator (direct or 45° foldback configuration, per order)
Note:
This is a professional, configuration-based servo electric cylinder. Please confirm your required stroke, load/thrust, speed, mounting style, and motor/gear ratio with our team before ordering (or immediately after purchase) to ensure the correct build and compatibility.
Dimension

Technical diagrams show 45-degree return and direct connection servo dimensions, with measurements for mechanical integration and assembly specifications.

Selection table for TDN045 servo electric cylinder showing rod lead, max load, thrust, motor power, torque, speed, and planetary gear ratios across configurations.

Technical specs for servo models with varying lead screws, load capacities, motor types, torque, speed, and planetary gear ratios. Key data includes max dynamic load, thrust, RPM, and stroke speeds across configurations.
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