SPIDER Automation 220mm Replacement Motor Arm for F450 F550 & Q450 Q550 Frames (Black)
The SPIDER Automation 220mm Replacement Motor Arm (Model: ARM-F450-BLK) is a heavy-duty, precision-molded structural component designed for 450-class quadcopters and 550-class hexacopters. During intense acrobatic maneuvers, obstacle navigation, or student flight instruction, unexpected crashes inevitably occur. Because the outer frame arms absorb the vast majority of impact forces, replacing individual broken arms is a far more practical and economical strategy than swapping out an entire multi-rotor frame.
Engineered using an upgraded composite formula containing PA66 Polyamide Nylon reinforced with 35% genuine glass fiber, this replacement arm offers superior fracture resistance compared to standard plastic arms. Measuring 220 mm long by 40 mm wide and weighing just 50 grams, it provides exact geometric alignment, rigid motor mounting, and seamless power distribution board (PCB) mounting interface compatibility. Featuring an integrated longitudinal spine ridge for aerodynamic prop-wash deflection and structural stiffness, the ARM-F450-BLK ensures quick bench repairs and long-term durability for hobbyists and professional UAV operators alike.
35% Glass Fiber Material Tech & Structural Vibration Suppression
The primary performance advantage of the SPIDER Automation ARM-F450-BLK lies in its advanced material composite. Pure nylon arms can flex excessively under high-thrust brushless motor loads, introducing unwanted arm twist that destabilizes flight controller gyros. By incorporating 35% glass fiber into high-grade PA66 polyamide nylon, the arm achieves extreme tensile and flexural strength while retaining essential elasticity to absorb hard landing shocks.
Furthermore, the engineered longitudinal support ridge running along the upper face of the arm acts as a structural spine. This design resists torsional deformation during high-speed banked turns while dampening high-frequency motor harmonic vibrations before they reach the main flight control stack.
Technical Features & Functional Characteristics
- 35% Glass Fiber PA66 Polymer Blend: High-density composite material ensures outstanding impact resistance, wear durability, and high thermal stability.
- Exact Factory-Spec Geometry: Direct drop-in replacement matching the original length, width, and mounting hole spacing of F450, F550, Q450, and Q550 frames.
- Reinforced Spine Ridges: Top longitudinal ridges add structural stiffness, preventing arm bend under full-throttle prop thrust.
- Optimized PCB Mounting Clearance: Form-fitted base contours fit tightly over lower power distribution boards (PDB) and top frame plates.
- Pre-Drilled 3mm Motor Mounting Slots: Multi-pattern hole layout supports standard 16×19mm and 19×25mm motor bolt circles.
- Fast Single-Wrench Maintenance: Modular design allows pilots to replace a damaged arm in minutes using standard hex keys without rewiring the central stack.
- Matte Black Aerodynamic Finish: Sleek black finish provides clean visual styling and matches custom drone color schemes.
System Compatibility & Airframe Integration
The SPIDER Automation ARM-F450-BLK is designed for universal mechanical compatibility across 450mm and 550mm multi-rotor platforms:
- Compatible Multirotor Frames: Fits F450 (450mm Quadcopter), F550 (550mm Hexacopter), Q450, and Q550 glass fiber/PCB airframes.
- Brushless Outrunner Motors: Fits 2212, 2216, 2814, and 3508 (800KV to 1100KV) brushless outrunner motors with 3mm mounting screws.
- Electronic Speed Controllers (ESC): Supports 15A, 20A, 30A, and 40A individual ESCs strapped cleanly along the underside or top of the arm.
- Hardware Accessories: Fully compatible with M3 frame screws, pre-threaded brass chassis sleeves, and tall ABS landing gear legs.
Applications & Industrial Deployment
This 35% glass fiber reinforced replacement arm serves as an essential structural spare part across multiple multi-rotor sectors:
- Aerial Photography Drone Servicing: High-reliability replacement part for maintaining camera-carrying F450/F550 quadcopters and hexacopters.
- STEM & University Drone Robotics Labs: Indispensable spare part for university engineering labs and student drone assembly workshops.
- Autonomous UAV Research & Field Repairs: Quick field-replacement arm for mapping drones and autonomous sensor platforms subjected to rough landings.
- Flight School Fleet Maintenance: High-volume replacement component for repairing training fleet multi-rotors after novice pilot crashes.
- Custom DIY Drone Prototyping: Rigid structural arm for building custom 4-axis or 6-axis aerial platforms and ground-rover testbeds.
Package Includes
- 1 × SPIDER Automation 220mm Replacement Motor Arm for F450/F550/Q450/Q550 (Black)
Comprehensive Product Specifications
| Parameter | Specification Details |
|---|---|
| Brand | SPIDER Automation |
| Model Part Number | ARM-F450-BLK |
| Product Category | Multirotor Structural Spare Part / Replacement Frame Arm |
| Primary Material Composition | PA66 Polyamide Nylon Reinforced with 35% Genuine Glass Fiber |
| Arm Color | Matte Black |
| Compatible Airframe Models | F450 (Quadcopter), F550 (Hexacopter), Q450, Q550 Frame Kits |
| Arm Overall Length | 220 mm |
| Arm Maximum Width | 40 mm |
| Motor Mount Hole Diameter | 3.0 mm Screw Slots (Fits 2212, 2216, 2814, 3508 Motors) |
| PCB / Frame Plate Compatibility | Direct Fit for Glass Fiber and Integrated PCB Main Frame Plates |
| Torsional Reinforcement | Integrated Upper Longitudinal Spine Ridge |
| Product Net Weight | 50 g per Arm |
| Operating Temperature Range | -20°C to +85°C Industrial Environmental Tolerance |
| Gross Shipping Weight | 0.055 kg (55 grams) |
| Shipping Package Dimensions (L × W × H) | 23 cm × 4 cm × 4 cm |
Installation & Field Replacement Guidelines
Follow standard drone bench maintenance steps when replacing damaged arms on F450/F550 frames:
- Disassembly: Remove the broken arm by unscrewing the four M3 frame screws connecting the arm to the top plate and lower PCB board. De-solder or disconnect the ESC motor leads.
- Motor Transfer: Unbolt the brushless outrunner motor from the damaged arm and mount it to the pre-drilled 3mm slots of the new ARM-F450-BLK arm using appropriate length M3 motor screws.
- Chassis Alignment: Position the new replacement arm over the pre-threaded brass sleeves on the lower PCB board, ensuring correct orientation.
- Hardware Torqueing: Insert the M3 frame bolts through the top glass fiber plate and arm base, tightening securely with a hex wrench without over-torquing.
- ESC Wiring & Inspection: Secure the ESC and motor phase wires along the arm body using cable ties or insulation tape, verifying prop clearance prior to battery connection.
