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Brushless Servo GearsIn the race for innovations that get big results, Futaba always comes first — whether bringing exceptionally precise Silicon Micro Machining (SMM) technology to gyros or getting maximum speed, reliability and security out of 2.4GHz radio systems. Now Futaba has done it again — by unveiling the first digital servos with the advantages of brushless technology. No one's done it before.....and the payoff is huge!

  • At least FIVE TIMES longer-lasting than brushed servos.

  • 30% faster response times.

  • Greater resistance to jolts and vibration.

  • Smoother operation.

  • Same power consumption as brushed digital servos.

  • Same compact case size as standard servos.

  • Exceptionally durable geartrain.

  • Smooth dual ball bearings and strong Samarium Cobalt magnets.

"The BLS251 is amazing. Tail control feels like velvet. I was able to increase the gain in hover from 70 to 90 without ever getting a wag. The tail stays absolutely still no matter what the wind does for more stability in the cyclics. Upstairs, tracking is better than ever. This is a must-have!"

— Dwight Shilling
U.S.A. F3C World Championship Team Member Ranked among the Top 3 U.S. F3C pilots

[ Click here for a review by RC Power ]
 
     

Futaba servo dimensions are listed as: Length, width and height, e.g. 1.4 in L x 0.06 in W x 1.1 in H

Click stock number for tech notes. Click image for 3-view drawing.
   
Mini/Micro
   
BLS153 Mini Air Servo
BLS153 Mini Air Servo
FUTM0513  
Volts Torque Speed
4.8V 76 oz-in (5.5 kg-cm) 0.15 sec/60°
6.0V 97.2 oz-in (7.0 kg-cm) 0.12 sec/60°
Dimensions Weight
1-7/16 x 9/16 x 1-1/8 in
(36 x 15 x 29 mm) 		0.9 oz (26 g)
2BB, BLS

BLS651 Mini Car 1/12 Scale Servo
BLS651 1/12 Car Servo
FUTM0567  
Volts Torque Speed
4.8V 76 oz-in (5.5 kg-cm) 0.15 sec/60°
6.0V 97 oz-in (7.0 kg-cm) 0.12 sec/60°
Dimensions Weight
1-7/16 x 9/16 x 1-1/8 in
(36 x 15 x 29 mm) 		0.9 oz (26 g)
2BB, BLS
   
Specialty
   
BLS154 Low-Profile Aileron Servo
BLS154 Low-Profile Aileron Servo
FUTM0514  
Volts Torque Speed
4.8V 111 oz-in (8.0 kg-cm) 0.13 sec/60°
6.0V n/a n/a
Dimensions Weight
1-7/8 x 1-1/16 x 1 in
(48 x 27 x 25 mm) 		1.8 oz (50 g)
2BB, WP, BLS

BLS251 Digital Heli Rudder Servo
BLS251 Brushless Digital Heli Rudder Servo
FUTM0521  
Volts Torque Speed
4.8V 53.0 oz-in (3.8 kg-cm) 0.06 sec/60°
6.0V n/a n/a
Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm) 		2.2 oz (61 g)
2BB, MG, WP, BLS, MCC

BLS254 Heli Rudder Servo
BLS253 Brushless 3D Heli Servo
FUTM0524  
Volts Torque Speed
4.8V 53 oz-in (3.8 kg-cm) 0.06 sec/60°
6.0V n/a n/a
Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm)		 1.8 oz (51 g)
2BB, WP, BLS

BLS257 Mini Heli Rudder Servo
BLS257 Servo
FUTM0527  
Volts Torque Speed
4.8V 36 oz-in (2.6 kg-cm) 0.07 sec/60°
6.0V n/a n/a
Dimensions Weight
1-7/16 x 9/16 x 1-1/8 in
(36 x 15 x 29 mm)		 0.9 oz (26 g)
2BB, BLS

BLS551 Servo
BLS551 Servo
FUTM0564  
Volts Torque Speed
4.8V 102 oz-in (7.4 kg-cm) 0.13 sec/60°
6.0V 128 oz-in (9.2 kg-cm) 0.10 sec/60°
Dimensions Weight
1-5/8 x 13/16 x 1 in
(41 x 20 x 25 mm) 		1.6 oz (44 g)
2BB, MG. WP, BLS

 
   
Standard
   
BLS151 Servo
BLS151 Servo
FUTM0511  
Volts Torque Speed
4.8V 133 oz-in (9.6 kg-cm) 0.15 sec/60°
6.0V n/a n/a
Dimensions Weight
1-9/16 x 13/16 x 1-3/8 in
(40 x 20 x 35 mm) 		1.6 oz (45 g)
Exploded View
2BB, WP, BLS

BLS152 Super High-Torque Air Servo
BLS152 Super High-Torque Air SErvo
FUTM0512  
Volts Torque Speed
4.8V n/a n/a
6.0V 431 oz-in (31.0 kg-cm) 0.14 sec/60°
Dimensions Weight
1-5/8 x 13/16 x 1-1/2 in
(41 x 21 x 38 mm) 		2.6 oz (73 g)
2BB, MG, WP, BLS, MCC
BLS155 High-Torque Air Servo
BLS155 Servo
FUTM0515  
Volts Torque Speed
4.8V 200 oz-in (14.4 kg-cm) 0.19 sec/60°
6.0V 250 oz-in
(18.0 kg-cm) 		0.15 sec/60°
Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm) 		2.3 oz (64 g)
2BB, MG, WP, BLS, MCC

BLS156HV High-Torque
BLS156HV High-Torque
FUTM0750  
Volts Torque Speed
6.0V 250 oz-in (18.0 kg-cm) 0.15 sec/60°
7.4V 292 oz-in (21 kg-cm) 0.12 sec/60°
Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm)		 2.3 oz (66 g)
HV
2BB, MG. WP, BLS, MCC

BLS157HV Ultra-Torque
BLS157HV Ultra-Torque
FUTM0751  
Volts Torque Speed
6.0V 431 oz-in (31.1 kg-cm) 0.14 sec/60°
7.4V 514 oz-in (37 kg-cm) 0.11 sec/60°
Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm)		 2.7 oz (77 g)
HV
2BB, HG, WP, BLS, MCC

BLS252 F3C Heli Servo
BLS252 Brushless F3C Heli Servo
FUTM0522  
Volts Torque Speed
4.8V 139 oz-in (10.0 kg-cm) 0.16 sec/60°
6.0V 175 oz-in (12.6 kg-cm) 0.13 sec/60°
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Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm)		 2.1 oz (58 g)
2BB, MG, WP, BLS

BLS253 3D Heli Servo
BLS253 Brushless 3D Heli Servo
FUTM0523  
Volts Torque Speed
4.8V 117 oz-in (8.4 kg-cm) 0.13 sec/60°
6.0V 147 oz-in
(10.6 kg-cm) 		0.10 sec/60°
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Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm) 		2.1 oz (58 g)
2BB, MG, WP, BLS

BLS255HV High-Speed Heli Cyclic
BlS255HV High-Speed
FUTM0758  
Volts Torque Speed
6.0V 147 oz-in (10.6 kg-cm) 0.10 sec/60°
6.6V 156 oz-in (11.2 kg-cm) 0.09 sec/60°
7.4V 167 oz-in (12 kg-cm) 0.08 sec/60°
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Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm)		 2.1 oz (60 g)
HV
2BB, BLS, WP, MCC

BLS256HV High Voltage High Speed Servo
BLS256HV High Voltage High Speed Servo
FUTM0759
Volts Torque Speed
6.0V 61 oz-in (4.4 kg-cm) 0.06 sec/60°
6.6V 61 oz-in (4.4 kg-cm) 0.06 sec/60°
7.4V 70 oz-in (5.0 kg-cm) 0.05 sec/60°
Dimensions Weight
1-9/16 x 25/32 x 29/64 in (
40 x 20 x 37 mm)		 2.15 oz (61 g)
HV
2BB, MG, WP, MCC

BLS351 Digital High-Torque Servo
BLS351 Brushless Digital High-Torque Servo
FUTM0551  
Volts Torque Speed
4.8V 173 oz-in (12.5 kg-cm) 0.16 sec/60°
6.0V 217 oz-in (15.6 kg-cm) 0.13 sec/60°
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Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm)		 2.2 oz (63 g)
2BB, MG, WP, BLS, MCC

BLS352 Brushless 3D Heli Servo
BLS352 Brushless Digital High-Torque Servo
FUTM0554  
Volts Torque Speed
4.8V 200 oz-in (14.4 kg-cm) 0.19 sec/60°
6.0V 250 oz-in (18.0 kg-cm) 0.15 sec/60°
spacer
Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm)		 2.2 oz (63 g)
2BB, MG, WP, BLS, MCC

BLS451 Digital High-Torque High-Speed Servo
BLS451 Brushless Digital High-Torque High-Speed Servo
FUTM0552  
Volts Torque Speed
4.8V 118 oz-in (8.5 kg-cm) 0.13 sec/60°
6.0V 147 oz-in (10.6 kg-cm) 0.10 sec/60°
spacer
Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm) 		2.1 oz (58 g)
2BB, MG, WP, BLS

BLS452 High-Torque EP Car Servo
BLS451 Brushless Digital High-Torque High-Speed Servo
FUTM0553  
Volts Torque Speed
4.8V 156 oz-in (11.2 kg-cm) 0.18 sec/60°
6.0V 194 oz-in (14.0 kg-cm) 0.14 sec/60°
spacer
Dimensions Weight
1-9/16 x 13/16 x 1-7/16 in
(40 x 20 x 37 mm)		 2.1 oz (58 g)
2BB, MG, WP, BLS



BB = Ball Bearing • MG = Metal Gear • HG = Hybrid Gear • WP = Water Protected • BLS = Brushless Motor • MCC = Metal Center Case
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