Spring pulley

Timing Belt Pulley Spring Bearing Tensioner
Ever-power is the leading enterprise in engine-drive area in China. We’re excellent supplier for engine accessories parts, and we specialized in developing automatic tensioner ,idler ,fan support. Also, we have excellent belt suppliers like Optibelt so we can pacake our products with belt.

Now I’d like to briefly introduce our company history. ever-power was funded by Mr. Shen Yongfeng. He started to develop belt tensioner for Chinese automotive engine brands like Cummins  on 1993. On 2003, our funder decided to move the auto engine part business to Shanghai, so he invested ¥ 60,000,000 RMB in the construction and marketing of ever-power Auotomobile Technology Co., Ltd, and he also funded Hongkong Bioko to enter the Hongkong market share.

ever-power has its own devloping teams. For now we have 17 engineers, including one supervisor, two system analysors, eight drawing makers, three part validators and three system validators. We’re able to develop new products and new structures for our clinets, and we have softwares to conduct layout analysis and dynamic simulation. Also, we can bring our Rotect testing machine to our client’s testing center to support their bench testing.  

ever-power is keeping supplying to more than 190 domestic and oversea OEM customers including Cummins JEP, MAN, Ford, Susuki, Dongfeng Renault, Sinotruck, Shanghai Disel Engine Co., Ltd.  

Last year, ever-power’s annual turnover is 22.84 million USD and this year our annual turnover is 27.41 million USD. And in last year our production capacity is two 2,600,000 pcs, howver, the production capacity we used is 2,050,000 pcs which means Bioko still have 550,000 pcs margin capacity. Welcome to contact Bioko and discussing new projects with us! Thank you!

Backed ourselves with sound installation and advanced devices, we are involved in offering quality assured array of Spring Pulley 170. These are smooth in complete and obtainable in compact design. . The standard of this array was created remember the needs of the customers. The price of this array can be very nominal.
Smooth in finish

Quality high

Different sizes available


Spring rope pulley 118 diameter series
For closing sliding doors – approved for use on smoke and fire safety doors
Simple, effective and cost-effective closing gadget for sliding doors
Through the opening of the entranceway the internal springtime is tensioned and automatically pulls the sliding door closed
Obtainable with different forces: 25 N, 50 N, 80 N or 100 N (only as double spring rope pulley)
Closing force can be adjusted simply by pretensioning the spring
Thanks to its materials and the absolutely accurate fitting of the hub, the springtime rope pulley also functions very silently, with no annoying noise.
As elements of the sliding door closer DICTAMAT 50 the spring rope pulleys with 25 and 50 N are also approved because of their use on smoke and fire safety doors.

The closing speed, nevertheless, is not controlled when using only a spring rope pulley for closing. If for basic safety or functional reasons a managed closing speed is required, we recommend to utilize the DICTAMAT 50 sliding door closer. It incorporates the springtime rope pulley as closing gadget.

Backed ourselves with audio installation and advanced devices, we are involved in offering quality confident array of Spring Pulley 170. They are smooth in finish and available in compact design. . The quality of this array is designed remember the requirements of the customers. The cost of this array is also very nominal.
Smooth in finish

Quality high

Different sizes available



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Ep Screw Jack Co., Ltd.

Mail: [email protected]

As one of leading manufacturers, suppliers and exporters of mechanical products in China, We offer reducers, sprockets, industrial and conveyor chain, belts, pulleys, gears, racks, gearboxes, motors, PTO Shafts, taper lock Bushing, vacuum Pumps, screw air compressors and many other products. Please contact us for details.

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