8020 PRO Motor

The 8020 PRO motor is a high-performance brushless motor designed for very large UAV applications. This documentation covers the 120 KV variant with detailed specifications and test data.

Key Features:

• High thrust up to 15,971g for very large UAVs
• Robust dual 6001/2RSL sealed bearings for long life
• Optimized for 28"–32" propellers
• Lightweight design (~750g) for efficient heavy-lift performance
• High power density (up to 5.03 W/g maximum)
• Professional-grade performance for industrial, surveying, and cinematography drones

120 KV

120 KV - Specifications

Motor Specifications:

• KV Rating: 120 RPM/V
• Kt (Motor Torque Constant): 0.108 Nm/A @ 3200 RPM
• Weight: 566 g ± 5 g
• Max Thrust: 15,971g (with MZ 32×10.6 prop)
• Voltage Range: 44V – 50V (12S LiPo)
• Io (48@V): 3A (48@V)
• Max Continuous Current: 54A (180s)
• Max Continuous Power: 2954W (180s)
• Power Density: 3.66 W/g (Rated), 5.03 W/g (Maximum)
• Motor Diameter: Ø 88.40 mm
• Motor Length: 50.3 mm
• Stick Out Shaft Diameter: Ø 8 mm
• Stator Poles: 36S
• Magnetic Poles: 42P
• Bearings: Dual 6001/2RSL Sealed
• Inductance per phase (Winding Inductance): 0.038 (≈0.03) mH
• Resistance per phase (Rph): 0.06 (≈0.03) Ω
• Motor Mount Pattern @ 90°: 4 × M4 @ PCD Ø 40 mm, depth: 10 mm
• Compatible Propeller Size: 28" to 30"
• Propeller Mount Pattern: 4 × M3 @ PCD Ø 20 mm, depth: 8 mm, 4 × M4 @ PCD Ø 23 mm, depth: 8 mm

Test Data - 120 KV

28 x 9.2 CF_FX

Test Conditions:

• ESC: HW 80A 12S
• Battery: 2 X TB - 22000 mAh 12S
• Test Date: 22-03-2024
• Environmental Temp: 37°C
• Humidity: 33%
• Cross-winds: Mild

PWM	Throttle %	Voltage (V)	Current (A)	RPM	Thrust (g)	Torque (N·m)	Power (W)	Efficiency (g/W)	Temp (°C)
1300	30	49.9	1.9	1449	1108	0.37	94.8	11.7	59°C (@70% 10 min Constant)
1400	40	49.8	4.4	2018	2191	0.74	219.1	10.2	59°C (@70% 10 min Constant)
1500	50	49.5	8.8	2633	4356	1.23	435.6	8.9	59°C (@70% 10 min Constant)
1600	60	49.2	14.9	3148	7331	1.79	733.1	7.6	59°C (@70% 10 min Constant)
1700	70	48.8	22.7	3613	7347	2.39	1107.8	6.6	63°C (Maximum)
1800	80	48.3	33.9	4087	9643	3.12	1637.4	5.9	63°C (Maximum)
1900	90	47.7	45.7	4500	11741	3.76	2179.9	5.4	63°C (Maximum)
1950	95	47.4	50.8	4640	12625	4.05	2407.9	5.2	63°C (Maximum)
2000	100	47.4	50.7	4640	12534	4.05	2403.2	5.2	63°C (Maximum)

29 x 9.5 CF_FX

Test Conditions:

• ESC: HW 80A 12S
• Battery: 2 X TB - 22000 mAh 12S
• Test Date: 29-03-2024
• Environmental Temp: 37°C
• Humidity: 29%
• Cross-winds: Mild

PWM	Throttle %	Voltage (V)	Current (A)	RPM	Thrust (g)	Torque (N·m)	Power (W)	Efficiency (g/W)	Temp (°C)
1300	30	49.9	3.4	1425	1231	0.44	169.7	7.3	63°C (@70% 10 min Constant)
1400	40	49.7	6.2	1991	2477	0.86	308.1	8.0	63°C (@70% 10 min Constant)
1500	50	49.5	11.3	2587	4305	1.45	559.4	7.7	63°C (@70% 10 min Constant)
1600	60	49.1	18.4	3094	6231	2.09	903.4	6.9	63°C (@70% 10 min Constant)
1700	70	48.7	26.9	3526	8178	2.72	1310.0	6.2	63°C (@70% 10 min Constant)
1800	80	48.1	38.8	3986	10423	3.48	1866.3	5.6	69°C (Maximum)
1900	90	47.4	52.1	4372	12567	4.22	2469.5	5.1	69°C (Maximum)
1950	95	47.2	57.5	4506	13426	4.51	2714.0	4.9	69°C (Maximum)
2000	100	47.2	57.6	4502	13467	4.52	2718.7	5.0	69°C (Maximum)

30 x 10.5 CF_FX

Test Conditions:

• ESC: HW 80A 12S
• Battery: 2 X TB - 22000 mAh 12S
• Test Date: 29-03-2024
• Environmental Temp: 37°C
• Humidity: 29%
• Cross-winds: Mild

PWM	Throttle %	Voltage (V)	Current (A)	RPM	Thrust (g)	Torque (N·m)	Power (W)	Efficiency (g/W)	Temp (°C)
1300	30	49.8	2.3	1379	1497	0.53	114.5	13.1	70°C (@70% 10 min Constant)
1400	40	49.6	5.6	1947	2967	1.06	277.8	10.7	70°C (@70% 10 min Constant)
1500	50	49.3	11.8	2519	5026	1.75	581.7	8.6	70°C (@70% 10 min Constant)
1600	60	48.9	20.3	2997	7199	2.53	992.7	7.3	70°C (@70% 10 min Constant)
1700	70	48.4	30.6	3383	9381	3.33	1481.0	6.3	70°C (@70% 10 min Constant)
1800	80	47.7	43.9	3779	11759	4.14	2094.0	5.6	70°C (@70% 10 min Constant)
1900	90	47	59.6	4125	14106	4.94	2801.2	5.0	74°C (Maximum)
1950	95	46.7	65.7	4246	14941	5.23	3068.2	4.9	74°C (Maximum)
2000	100	46.7	65.6	4247	14909	5.22	3063.5	4.9	74°C (Maximum)

MZ 30 x 10 CF_FX

Test Conditions:

• ESC: HW 80A 12S
• Battery: 2 X TB - 22000 mAh 12S
• Test Date: 29-03-2024
• Environmental Temp: 37°C
• Humidity: 29%
• Cross-winds: Mild

PWM	Throttle %	Voltage (V)	Current (A)	RPM	Thrust (g)	Torque (N·m)	Power (W)	Efficiency (g/W)	Temp (°C)
1300	30	49.8	2.3	1374	1509	0.54	114.5	13.2	75°C (@70% 10 min Constant)
1400	40	49.6	5.8	1938	3063	1.08	287.7	10.6	75°C (@70% 10 min Constant)
1500	50	49.3	12.2	2501	5134	1.81	601.5	8.5	75°C (@70% 10 min Constant)
1600	60	48.8	21.3	2962	7494	2.65	1039.4	7.2	75°C (@70% 10 min Constant)
1700	70	48.3	31.7	3354	9455	3.42	1531.1	6.2	75°C (@70% 10 min Constant)
1800	80	47.6	45.3	3734	11685	4.30	2156.3	5.4	81°C (Maximum)
1900	90	46.8	61.6	4060	13970	5.14	2882.9	4.8	81°C (Maximum)
1950	95	46.5	68.2	4171	14893	5.46	3171.3	4.7	81°C (Maximum)
2000	100	46.5	68.2	4167	14867	5.48	3171.3	4.7	81°C (Maximum)

VT 3010 CFRP_FP

Test Conditions:

• ESC: HW 80A 12S
• Battery: 2 X TB - 22000 mAh 12S
• Test Date: 29-03-2024
• Environmental Temp: 37°C
• Humidity: 29%
• Cross-winds: Mild

PWM	Throttle %	Voltage (V)	Current (A)	RPM	Thrust (g)	Torque (N·m)	Power (W)	Efficiency (g/W)	Temp (°C)
1300	30	49.6	3.0	1297	1885	0.80	148.8	12.7	82°C (@70% 10 min Constant)
1400	40	49.4	7.5	1797	3646	1.51	370.5	9.8	82°C (@70% 10 min Constant)
1500	50	49.0	16.2	2343	6107	2.50	793.8	7.7	82°C (@70% 10 min Constant)
1600	60	48.4	27.1	2775	8486	3.43	1311.6	6.5	82°C (@70% 10 min Constant)
1700	70	47.8	39.0	3129	10562	4.23	1864.2	5.7	82°C (@70% 10 min Constant)
1800	80	47.1	53.6	3475	12659	5.03	2524.6	5.0	82°C (@70% 10 min Constant)
1900	90	46.3	69.0	3784	14566	5.72	3194.7	4.6	88°C (Maximum)
1950	95	46.0	75.0	3902	15227	5.96	3450.0	4.4	88°C (Maximum)
2000	100	46.0	75.1	3892	15319	5.97	3454.6	4.4	88°C (Maximum)

MZ 32 x 10.6 CF_FP

Test Conditions:

• ESC: HW 80A 12S
• Battery: 2 X TB - 22000 mAh 12S
• Test Date: 28-03-2024
• Environmental Temp: 36°C
• Humidity: 32%
• Cross-winds: Mild

PWM	Throttle %	Voltage (V)	Current (A)	RPM	Thrust (g)	Torque (N·m)	Power (W)	Efficiency (g/W)	Temp (°C)
1300	30	49.7	2.6	1331	1721	0.68	129.2	13.3	86°C (@70% 10 min Constant)
1400	40	49.5	6.9	1866	3518	1.35	341.6	10.3	86°C (@70% 10 min Constant)
1500	50	49.1	14.5	2406	5908	2.23	712.0	8.3	86°C (@70% 10 min Constant)
1600	60	48.6	25.1	2830	8395	3.16	1219.9	6.9	86°C (@70% 10 min Constant)
1700	70	48.0	36.7	3190	10414	3.98	1761.6	5.9	86°C (@70% 10 min Constant)
1800	80	47.2	52.4	3508	12858	4.96	2473.3	5.2	86°C (@70% 10 min Constant)
1900	90	46.4	70.0	3762	15038	5.81	3248.0	4.6	92°C (Maximum)
1950	95	46.0	77.1	3856	15842	6.14	3546.6	4.5	92°C (Maximum)
2000	100	46.0	77.1	3847	15971	6.11	3546.6	4.5	92°C (Maximum)

Performance Summary:

• Best Efficiency: MZ 32×10.6 CF_FP @ 30% throttle (13.3 g/W, 1,721g thrust)
• Maximum Thrust: MZ 32×10.6 CF_FP @ 100% throttle (15,971g thrust, 4.5 g/W)
• Balanced Performance: TM 30×10.5 CF_FX @ 30% throttle (13.1 g/W, 1,497g thrust)
• Operating Temperature: 59-92°C depending on load and propeller
• Recommended Continuous: 70% throttle max for sustained flight

Recommended Applications - 120 KV

• Very large commercial UAVs
• Heavy payload applications (up to 16kg)
• Long-endurance missions with very large propellers
• Professional cinematography and surveying
• Agricultural and industrial heavy-lift drones

Common Resources

2D CAD Drawing

The 2D CAD drawing provides detailed dimensions and mounting specifications for the 8020 PRO motor.

Download 2D CAD Drawing

Drawing Specifications:

• Motor Mount Pattern @ 90°: 4 × M4 @ PCD Ø 40 mm, depth: 10 mm
• Propeller Mount Pattern: 4 × M3 @ PCD Ø 20 mm, depth: 8 mm, 4 × M4 @ PCD Ø 23 mm, depth: 8 mm
• Motor Diameter: Ø 88.40 mm
• Motor Length: 50.3 mm
• Stick Out Shaft Diameter: Ø 8 mm

Note: All dimensions in millimeters (mm). Specifications and drawings may be revised without notice.

Recommended ESC & Propeller

Compatible ESCs

Recommended Configurations:

ESC Rating	Application	Features
80A	General purpose	Standard FOC
100A	High performance	Advanced telemetry, FOC
120A+	Heavy lift	Enhanced cooling, FOC, high current

ESC Requirements:

• Continuous rating: 80A minimum (100A recommended)
• Voltage support: 12S (44-50V) capable
• Protocol: DShot600 or higher recommended
• Features: Active braking, telemetry support, FOC capability mandatory

For detailed ESC specifications and compatibility, see ESC Overview.

Compatible Propellers

Tested Propeller Configurations:

Propeller Size	Pitch	Application	Performance
MZ 32×10.6 CF_FP	High	Maximum thrust & efficiency	Excellent
VT 3010 CFRP_FP	High	High thrust	Very Good
TM 30×10.5 CF_FX	High	Balanced performance	Very Good
MZ 30×10 CF_FX	Medium-High	Balanced thrust	Good
TM 29×9.5 CF_FX	Medium	General purpose	Good

Propeller Selection Guidelines:

• Start with MZ 32×10.6 CF_FP for best efficiency and maximum thrust
• Use TM 30×10.5 CF_FX for balanced performance
• Always balance propellers before installation
• Carbon fiber recommended for high performance
• Ensure adequate propeller clearance (minimum 30mm)

For more propeller options, see Propeller Overview.

System Integration

Complete System Recommendations:

1. Efficiency Build (Long flight time)

   • Motor: 8020 PRO 120KV
   • Propeller: MZ 32×10.6 CF_FP
   • ESC: 80A FOC
   • Battery: 12S 16000mAh
   • Expected Performance: 10,414g thrust, 450+ seconds runtime

2. Balanced Build (General purpose)

   • Motor: 8020 PRO 120KV
   • Propeller: TM 30×10.5 CF_FX
   • ESC: 100A FOC
   • Battery: 12S 12000mAh
   • Expected Performance: 9,330g thrust, 350-450 seconds runtime

3. Performance Build (Maximum thrust)

   • Motor: 8020 PRO 120KV
   • Propeller: MZ 32×10.6 CF_FP
   • ESC: 120A FOC
   • Battery: 12S 10000mAh
   • Expected Performance: 15,971g thrust, 250 seconds runtime

Maintenance and Inspection

Pre-Flight Checks

Before every flight:

• Visual inspection for physical damage
• Propeller balance and condition check
• Mounting bolt security verification (M4/M5 bolts)
• Wire routing inspection (no contact with moving parts)
• Brief spin test (listen for unusual sounds)

Periodic Maintenance Schedule

Every 10 Flight Hours:

• Re-torque mounting bolts to specification
• Inspect threadlocker integrity
• Check bearing smoothness (manual rotation)
• Clean motor exterior with compressed air
• Inspect propeller for wear or damage

Every 50 Flight Hours:

• Detailed bearing inspection
• Shaft runout measurement
• Electrical connection integrity check
• Replace propeller if worn
• Document maintenance in flight log

Signs Requiring Immediate Inspection:

• Unusual vibration during operation
• Increased motor temperature (>92°C)
• Grinding or scraping sounds
• Reduced thrust output
• Propeller wobble

Bearing Replacement

Bearing Specifications:

• Type: Dual 6001/2RSL Sealed
• Service Interval: 100-150 flight hours (typical)
• Replacement Procedure: Contact technical support or refer to motor maintenance procedures

Signs of Bearing Wear:

• Grinding or rattling sounds
• Increased vibration
• Shaft play or wobble
• Difficulty rotating by hand
• Increased operating temperature

Comparison with Similar Motors

PRO Series Comparison

Feature	8020 PRO	8015 PRO	6020 PRO
Weight	750 g	450 g	425 g
Max Thrust	15,971g (120KV)	13,391g (100KV)	13,902g (180KV)
Voltage	48V (12S)	48V (12S)	48V (12S)
Prop Size	28-32"	28-30"	22-26"
Application	Very Large UAVs	Very Large UAVs	Very Large UAVs
Mounting	M4/M5 bolts	M4 bolts	M3 bolts
Power Density	5.03 W/g	6.4 W/g	6.86 W/g

Selection Guide:

• 8020 PRO: Best for very large UAVs with 28-32" propellers, highest thrust capacity
• 8015 PRO: Lighter option with excellent efficiency for 28-30" propellers
• 6020 PRO: Compact high-thrust option for 22-26" propellers

See Motor Overview for complete specifications.

Safety Notes

⚠️ Important Safety Information

Operational Safety:

• Never run motor without propeller attached (causes unbalanced load)
• Ensure proper cooling during extended operation
• Monitor motor temperature - do not exceed 92°C for sustained periods
• Inspect motor bearings regularly for wear
• Replace damaged propellers immediately

Electrical Safety:

• Verify correct ESC wiring before first power-up
• Use only 12S LiPo batteries (44-50V range)
• Do not exceed maximum continuous current (54A @ 180s)
• Ensure proper battery discharge rates (C-rating)
• Use ESCs rated for 12S operation with FOC capability

Installation Safety:

• Follow torque specifications exactly
• Never exceed maximum bolt depth (10mm for motor mount, 8mm for propeller mount)
• Verify rotation direction before propeller installation
• Maintain minimum 30mm clearance to frame
• Use proper size mounting hardware (M4/M5 for motor, M3/M4 for propeller)
• Ensure dual bearing configuration is properly seated

Emergency Procedures:

• If motor overheats (>92°C), land immediately
• If unusual vibration occurs, stop operation
• If motor makes grinding sounds, inspect bearings
• Always have emergency landing plan

Technical Support & Resources

Contact Information

• Technical Support: support@vectortechnics.com
• Phone Support: +918977744819 (Mon-Fri, 9AM-5PM IST)

Related Documentation

• Motor Installation Guide
• ESC Configuration Guide
• Propeller Selection Guide
• Motor Overview
• PRO Series

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Next Steps:

1. Review Installation Guide for mounting procedures
2. Select compatible ESC from tested configurations
3. Choose optimal propeller based on application
4. Review Motor Overview for system integration

Document Information:

• Revision: 1.0
• Last Updated: February 2026
• Product Code: VT-8020PRO-120KV
• Document ID: VT-DOC-8020PRO-01

Note: Specifications and drawings may be revised without notice. Vector Technics assumes no liability for reliance on unverified data. All dimensions in millimeters (mm).