Worm Gear

Product Detail

Description:

TWS produces series manual high efficiency worm gear actuator, is based on the 3D CAD framework of modular design, the rated speed ratio can meet the input torque of all different standards, such as AWWA C504 API 6D, API 600 and others. Our worm gear actuators, have been widely applied for the butterfly valve, ball valve,plug valve and other valves, for opening and closing function. BS and BDS speed reduction units are used in the pipeline network applications. The connection with the valves can meet ISO 5211 standard and customized.

Characteristics:

Use famous brand bearings to improve efficiency and service life. Worm and input shaft are fixed with 4 bolts for higher safety. Worm Gear is sealed with O-ring, and the shaft hole is sealed with rubber sealing plate to provide all-round water-proof and dust-proof protection. The high efficiency secondary reduction unit adopts high strength carbon steel and heat treatment technique. More reasonable speed ratio provides a lighter operation experience. The worm is made of ductile iron QT500-7 with the worm shaft （carbon steel material or 304 after quenching）， combined with high-precision processing, has the characteristics of wear resistance and high transmission efficiency. The die-casting aluminum valve position indicator plate is used to indicate the opening position of the valve intuitively. The body of worm gear is made of high-strength ductile iron, and its surface is protected by epoxy spraying. The valve connecting flange conforms to IS05211 standard, which makes the sizing more simple.

Parts and Material:

ITEM	PART NAME	MATERIAL DESCRIPTION(Standard)
ITEM	PART NAME	Material Name	GB	JIS	ASTM
1	Body	Ductile Iron	QT450-10	FCD-450	65-45-12
2	Worm	Ductile Iron	QT500-7	FCD-500	80-55-06
3	Cover	Ductile Iron	QT450-10	FCD-450	65-45-12
4	Worm	Alloy Steel	45	SCM435	ANSI 4340
5	Input Shaft	Carbon Steel	304	304	CF8
6	Position Indicator	Aluminium Alloy	YL112	ADC12	SG100B
7	Sealing Plate	BUNA-N	NBR	NBR	NBR
8	Thrust Bearing	Bearing Steel	GCr15	SUJ2	A295-52100
9	Bushing	Carbon Steel	20+PTFE	S20C+PTFE	A576-1020+PTFE
10	Oil Sealing	BUNA-N	NBR	NBR	NBR
11	End Cover Oil Sealing	BUNA-N	NBR	NBR	NBR
12	O-Ring	BUNA-N	NBR	NBR	NBR
13	Hexagon Bolt	Alloy Steel	45	SCM435	A322-4135
14	Bolt	Alloy Steel	45	SCM435	A322-4135
15	Hexagon Nut	Alloy Steel	45	SCM435	A322-4135
16	Hexagon Nut	Carbon Steel	45	S45C	A576-1045
17	Nut Cover	BUNA-N	NBR	NBR	NBR
18	Locking Screw	Alloy Steel	45	SCM435	A322-4135
19	Flat Key	Carbon Steel	45	S45C	A576-1045