Item No :  KH257DN50 
Description :  KH-257D Outrunner Motor is a powerful and high torque motor. It weights only 38-39.5g. Two 22mm 12 tooth stators and 16 pieces N50 magnet allows you to set-up the motor in many ways. For example: Distributed LRK winding with 14 magnet poles. KH-257D gives you highest flexibility to tailor make a prefect motor for your model.

KH-257D Outrunner Motor Kit includes the following parts:-
2pcs 22mm 12tooth Insulated Stators
16pcs 4 x 9 x 1.7mm N50 (Operation Temp. up to 80C)
1pc Pre-pressed CNC End-Bell and Flux Ring
30 feets #24 Magnet Wire
1pc CNC Aluminum Bearing Tube
2pcs 3.17 x 6.35mm Ball Bearing
1pc 3.17mm Hardened Steel Shaft
3pairs Connectors (Male and Female)
1pc C-clip
7pcs Shrinking Tubes

Specifications:
Size of Insulated 12poles Stator:
OD: 22mm, ID: 10mm, Length: 8.5mm (Total height of two stators)
Lamination: 0.3mm

Size of Bell:
OD: 27.7mm, ID: 26mm,

Airgap between magnets and stator: 0.15mm

Net Weight (RTF): 38-39.5g. It depends on magnet and winding set-up

Firewall Motor Mount and Stick Motor Mount can be purchased at "Motor Parts" section.

The performance data of 14magnet poles / Distributed LRK winding is available at “Tutorial Download" Section

Availability: Good news, this product in stock, ready for shipping.