NovaTork Industrial Torque Multiplier, China Leading Torque Tools Manufacturer, Quality Approved

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Place of Origin:
Shanghai, China (Mainland)
Brand Name:
Model Number:
M series
Torque Multiplier
Supply Ability
Supply Ability:
10000 Unit/Units per Month
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Packaging Details
safe packing
FOB Shanghai
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Torque multiplier


NovaTork Industrial Torque Multiplier, China Leading Torque Tools Manufacturer, Quality Approved


*Different ratio options.

*Alloy steel constructure for heavy duty use.

*Ratio accuracy:+/-5%

*Strong,safe Anti Wind-Up Ratchet available for more than  1500N.m multiplier for safe and comfortable operation.

*Easy to adjust reaction arm position.


PART #MultipleTorque RangeInput DriveOutput DriveABC (Min)C (Max)Tool WeightReaction
Arm Weight
M3.310003.3:110007501/2"3/4"7185  1.350.77+0.63
M25350025:1350026001/2"1 1/2"118164821969.11.2
M25400025:11/2"1 1/2"400030001181768219610.01.2
M25600025:11/2"1 1/2"6000450014021410525418.33.0
M25800025:1800060001/2"1 1/2"18222812529428.03.0
M251000025:11000080003/4"2 1/2"
M251200025:11200090003/4"2 1/2"


Torque Multiplier Photos  





Factory Photos



What is torque multiplier


A torque multiplier is a tool used to provide a mechanical advantage in applying torque to turn bolts, nuts or other items designed to be actuated by application of torque, such as the actuation of valves,[1] particularly where there are relatively high

torque requirements.


Torque multipliers typically employ an epicyclic gear train having one or more stages. Each stage of gearing multiplies the torque applied. In the epicyclic gear systems, torque is applied to the input gear or ‘sun’ gear. A number of planet gears are

arranged around and engaged with this sun gear, and therefore rotate. The outside casing of the multiplier, is also engaged with the planet gear teeth, but is prevented from rotating by means of a reaction arm, causing the planet gears to orbit

around the sun gear. The planet gears are held in a ‘planetary’ carrier which also holds the output drive shaft, therefore as the planet gears orbit around the sun gear, the carrier and so the output shaft rotates. Without the reaction arm to prevent

rotation of the outer casing, the output shaft cannot apply torque.


Along with the multiplication of torque, there is a decrease in rotational speed of the output shaft compared to the input shaft. This decrease in speed is inversely proportional to the increase in torque. For example, a torque multiplier with a rating of

3:1 will turn its output shaft with three times the torque, but at one third the speed, of the input shaft. However, due to friction and other inefficiencies in the mechanism, the output torque is slightly lower than the theoretical output.



How to use a torque multiplier


Operating Instructions

1,  Attach a suitable socket to the output male drive of the multiplier, then insert the socket onto the fasterner to be torqued.


2, Make sure that the reaction bar is in a secure contact with the equipment being worked on, and that the reaction bar will not damage any portion of the equipment.


3, Change the direction lever to desired direction - see drawing. (not applicable to multipliers below 1500 Nm)


4, Attach suitable torque wrench to the female input of the multiplier


5, Apply torque. It might take several revolutions before resistance it felt, and if possible, you can "spin" the wrench for faster

action. When resistance is felt, apply torque in a slow and steady manner. Refer to applicable torque wrench instructions

for proper operation and indication when desired torque has been reached. Stop applying torque at this point.


6, Carefully change the direction with the direction lever. Turn in reverse until there is no more force on the reaction bar (not applicable to multipliers below 1500Nm).


7, If you accidentally overload the fastener being torqued, you must losen it first, then re-torque per the above instructions


Why should you cooperate with NovaTork?


Shanghai UB Machinery Co., Ltd is a high-tech enterprise in China and a leading manufacturer and distributor of torque products including mechanical and electronic wrenches, testers, multipliers and calibration equipment.

Our modern 40,000 square meters factory is located conveniently to both downtown Shanghai and Pudong International Airport in Fengxian, Qianqiao Industrial Garden Zone near Hangzhou Bay. It is equipped with precision standard and custom-made machinery and equipment, and is staffed by professional engineers, experienced managers and highly trained production and inspection personnel. The Factory's ISO 9001 accreditation and a dedication to continuous product and quality improvement is the key to producing world-class torque products that comply with international standard ISO 6789 and U.S. standard ASME B107.14-2004.

Our products have been developed in close association with Mr. Jan S. Stasiek of the United States of America, who has over 40 years of proven and successful experience in the field of torque technology.After graduating from the University of California at Los Angeles, Mr. Stasiek held top engineering and managerial positions in leading tool-manufacturing companies including Utica Tool Company, JS Technology, and Danaher Tool Group. He is a member of American Society of Mechanical Engineers, and a former chairman of Hand Tool's Institute's Torque Wrench Standards Committee.

Our goal is to provide our customers with quality torque products, timely deliveries, attractive pricing, and superior service.