Product Description

The SD series Declutchable gearbox is designed for manual operation, but it can also be used in situations where manual drive is needed for automatic control systems and mechanical products. The SD series Declutchable gearbox is highly versatile and can be effectively utilised in various industries such as petroleum, chemical, pharmaceutical, water treatment, power plants, and nuclear power. It is specifically designed to support the operation of 90-degree open ball valves, butterfly valves, plug valves, and other types of valves.

Product Features

The product has a small size, is light in weight, has a well-thought-out design, and features a contemporary style.

The product series provides a range of output torque options and pneumatic actuators that may be readily paired with different valves.

The series connection adheres to the ISO5211 standard, featuring a square tenon on the upper part and a square hole on the lower part. The high torque mechanism is equipped with connection ratios of 320:1 and 450:1. It features many key holes that enable users to choose the appropriate position of the product for the valve body according to their specific needs.

The upper boundary pin can be elevated to automatically spin the eccentric device either 180° or 90°, allowing for pneumatic or manual operation.

The product is equipped with a unique lubricating grease upon shipment from the factory. Once assembled with the valve and pneumatic actuator, it is securely sealed, offering protection against dust and water, and meeting the IP65 standard.

Parameters

Main part and materials

No.	Name	Material	No.	Name	Material
1	Drive Spindle	Alloy Steel	9	Worm gear	Spheroidal graphite cast iron
2	Seal ring	Nitrile Rubber	10	Plane bearing	Bearing steel
3	Reed Spring	Stainless steel SS304	11	Handle	Stainless steel SS304
4	Upper Cover	Aluminum alloy	12	Eccentric Sleeve	Alloy Steel
5	Fastening	Stainless steel SS304	13	Seal ring	Nitrile Rubber
6	Positioning pin	Alloy Steel	14	Worm	Alloy Steel
7	Hand wheel	Carbon steel polyster coating	15	Transmission rod	Alloy Steel
8	Seal ring	Nitrile Rubber	16	Box	Aluminum alloy

Technical Parameter

Model	Double acting	Spring return	Actuator connection flange	Valve connection flange	Speed ratio	Handwheel diameter	Output torque
SD1	DA52-75	SR52-75	F05/F07	F05/F07	39:1	Φ180	180
SD2	DA83-92	SR83-92	F07/F10	F07/F10	38:1	Φ200	320
SD3	DA105-140	SR105-125	F10/F12	F07/F10/F12	36:1	Φ280	680
SD4	DA160-190	SR140-160	F10/F12/F14	F10/F12 or F14	50:1	Φ320	1200
SD5	DA210	SR190-210	F14/F16	F10/F14 or F12/F16	54:1	Φ400	2100
SD6	DA240-270	SR240	F16	F16	58:1	Φ500	3000

Model	SD-1	SD-2	SD-3	SD-4	SD-5	SD-6
A	150	180	200	260	310	395
B	70	93	113	129	163.5	165
C	44.7	54	65.5	82.5	109	135
D	60	70	80	105	115	120
E	Ø180	Ø200	Ø280	Ø320	Ø400	Ø500
F	120	132	153	195	215	236
G	33	39	40	57	54	62
H	87	93	113	138	161	174
J	19	21	27	32	43	54
K	15	19	22	28	38	46
M1	M8x4	M10x4	M12x4	M16x4	M20x4	M20x4
M2	M6x4	M8x4	M10x4	M12x4	M16x4	M16x4
W1	70	102	125	140	165	165
W2	50	70	102	125	140	140
SQ.1	14	17	22	27	36	46
N1	Ø10x4	Ø12x4	Ø14x4	Ø18x4	Ø22x4	Ø22x4
N2	Ø8x4	Ø10x4	Ø12x4	Ø14x4	Ø18x4
L1	70	102	125	140	165	165
L2	50	70	102	125	140
SQ.2	14	17	22	27	36	46

SD Series Declutchable Gearbox

Main part and materials

Technical Parameter