Servo HBS 860 BB, MG Graupner 7990

Servo brushless HBS860 BB MG 8 4 V Graupner 7990 Description
A new series of products to complement our existing range of digital servos.
These DES servos represent a product line which includes a suitable servo for every type of application, covering a vast range of specifications: different case sizes, gearbox types, torque levels and transit speeds, designed for any modeller from the beginner to the competition pilot.
The range includes some fully sealed versions (case screws, case sections and output gear) for increased operational reliability of your models.
Servos with precision-made twin-ballraced gearboxes made of aluminium and other metals guarantee superbly accurate positional performance. High-quality Amtel micro-controllers are used to process the control signals and provide good positional accuracy.
Suitable for RC model aircraft, helicopters, RC cars and model boats. Overvoltage diodes provide protection against voltage peaks caused by return currents.

• High voltage, operating voltage up to 8.4 V!
• Direct operation with 2-cell LiPo batteries
• Operating voltage range 4.8 ... 8.4 V
• Brushless
• 2 x ball bearings
• Metal gearbox

Info
High-Voltage Brushless Servo (HBS) HBS (high-voltage brushless servo) combines the performance of brushless technology with all the advantages of high-voltage servos. In addition to the unparalleled acceleration, greater efficiency, and no wear of carbon brushes, these servos can be supplied with an operating voltage of up to 8.4V. Direct connection of 2-cell LiPo battery packs is now possible with no problem; in addition, these servos also provide top performance at an operating voltage of just 6V. Precision in manufacturing and assembly as well as the very best component quality make uncompromising power and speed available to the servo mechanism. A new dimension in the combination of power, speed, acceleration, precision, and resolution.

Specification
Holding torque 6.0V, approx.: 255 Ncm
Transit speed at 6.0 V, approx. : 0,11 Sek/40°
All-up weight, approx.: 68 g
Angular travel incl. trim, approx. : 2 x 45 °
Transit speed at 7.4V, approx. : 0,09 Sek/40°
No-load current drain, approx. : 46 mA
Torque at 6.0V, approx.: 132 Ncm
Holding torque 7.4V, approx.: 289 Ncm
Charging rate at 6.0V approx.: 2350 mA
Dimensions (LxWxH): 40 x 20 x 40 mm
Torque at 7.4V, approx. : 150 Ncm
Bearings: Lager bb2x
Replacement gearbox: 7990.2
Charging rate of 7.4V approx.: 2860 mA
Gear unit: Getriebe mg
Operating voltage : 4,8 ... 8,4 V
Neutralimpuls: 1,5 ms
Max. Ansteuerfrequenz: 2,5 / 400 ms / Hz