Draw Works – NAFTA

Draw Works List

• With inner gear shift and outer gear shifter in drawworks.
• Shafts adopt superior alloy steel, bearings adopt roller bearings.
• All the chains are forced lubrication.
• Drum grooved, and the high-speed and low-speed ends of the drum shafts are equipped with ventilated-type air tube clutches. The brake rim is circulation water cooled.
• Band or disc brake is master brake. Auxiliary brake is electromagnetic eddy current brakes.

Model	JC10B	JC15DB	JC30B	JC30DB	JC40B	JC40D
Nominal drilling depth(4 1/2＂ DP) m	1000	1500	3000	3000	4000	4000
Rated Input power KW	210	500	440	600	735	800
Max. pulling of fast-line KN	80	150	200	210	280	280
Diameter of wire rope mm	22	26	29	29	32	32
Drum size (D×W) mm	400×650	473×900	560×120	508×1000	644×1208	644×1208
Sand drum size (D×W) mm	–	–	–	–	–	400×1080
Sand drum capacity m	–	–	–	–	–	4000
Hoisting speeds	2F+2R	2F+2R	4F+1R	1F+1R	4F+2R	4F+4R
Speeds for cathead shaft	2	–	–	–	–	2
Auxiliary brake	–	FDWS15	FDWS30	Regenerating brake	FDWS40	FDWS40
Overall dimensions (L×W×H)	7390×2500×2410	4500×2400×2500	6500×2500×2800	4700×2800×2552	6300×2628×2699	7000×3695×3010
Weight kg	9800	11000	17500	20366	28000	39125