Professional machinery manufacturing

What We Do

EVER-POWER GROUP CO., LTD. IS SPECIALIST IN MAKING ALL KINDS OF MECHANICAL TRANSMISSION AND HYDRAULIC TRANSMISSION LIKE: PLANETARY GEARBOXES, WORM REDUCERS, IN-LINE HELICAL GEAR SPEED REDUCERS, PARALLEL SHAFT HELICAL GEAR REDUCERS, HELICAL BEVEL REDUCERS, HELICAL WORM GEAR REDUCERS, AGRICULTURAL GEARBOXES, TRACTOR GEARBOXES, AUTO GEARBOXES, PTO DRIVE SHAFTS, SPECIAL REDUCER & RELATED GEAR COMPONENTS AND OTHER RELATED PRODUCTS, SPROCKETS, HYDRAULIC SYSTEM, VACCUM PUMPS, FLUID COUPLING, GEAR RACKS, CHAINS, TIMING PULLEYS, UDL SPEED VARIATORS, V PULLEYS, HYDRAULIC CYLINDER, GEAR PUMPS, SCREW AIR COMPRESSORS, SHAFT COLLARS LOW BACKLASH WORM REDUCERS AND SO ON. FURTHERMORE, WE CAN PRODUCE CUSTOMIZED VARIATORS, GEARED MOTORS, ELECTRIC MOTORS AND OTHER HYDRAULIC PRODUCTS ACCORDING TO CUSTOMERS’ DRAWINGS.

What is motor coupling

Clamped or compression rigid couplings come in two parts and fit together around the shafts to form a sleeve. They offer more flexibility than sleeved models, and can be used on shafts that are fixed in place. They generally are large enough so that screws can pass all the way through the coupling and into the second half to ensure a secure hold. Flanged rigid couplings are designed for heavy loads or industrial equipment. They consist of short sleeves surrounded by a perpendicular flange. One coupling is placed on each shaft so the two flanges line up face to face. A series of screws or bolts can then be installed in the flanges to hold them together. Because of their size and durability, flanged units can be used to bring shafts into alignment before they are joined together.

A beam coupling, also known as helical coupling, is a flexible coupling for transmitting torque between two shafts while allowing for angular misalignment, parallel offset and even axial motion, of one shaft relative to the other. This design utilizes a single piece of material and becomes flexible by removal of material along a spiral path resulting in a curved flexible beam of helical shape. Since it is made from a single piece of material, the Beam Style coupling does not exhibit the backlash found in some multi-piece couplings. Another advantage of being an all machined coupling is the possibility to incorporate features into the final product while still keep the single piece integrity.

Changes to the lead of the helical beam provide changes to misalignment capabilities as well as other performance characteristics such as torque capacity and torsional stiffness. It is even possible to have multiple starts within the same helix.

Our Product

product description

Metal Coupling

EPhas been designing and manufacturing high precision zero backlash couplings and other motion transfer components for over 30 years. Our patented LCS couplings provide the flexibility of a bellows coupling with the torsional stiffness and strength of a disc coupling, making them ideal for servo/drive applications and numerous other uses.

 High Performance, Cost-Efficient Replacement for Bellows Couplings
Ondrives.US’ Servo couplings are highly effective and cost-efficient replacements for bellows couplings. They provide the same performance and flexibility at roughly half the price.

EP couplings are true servo couplings, and are engineered for superior torsional rigidity (comparable to disc couplings), zero backlash coupling, high RPM performance, and long working life. Rated for speeds up to 10,000 RPMs, they can operate at up to 7° angular compensation and with up to 300 in-lbs. of torque.

Manufactured with 420 stainless steel flexible beams and 416 stainless steel hubs (LCS models) or aluminum hubs (LCG models).

product description

Bellows Type Coupling

A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power.
Couplings do not normally allow disconnection of shafts during operation, however there are torque limiting couplings which can slip or disconnect when some torque limit is exceeded.
The primary purpose of couplings is to join two pieces of rotating equipment while permitting some degree of misalignment or end movement or both.
By careful selection, installation and maintenance of couplings, substantial savings can be made in reduced maintenance costs and downtime.

Flexible Bellows type coupling

  • High torsional stiffness and response
  • Spring action bellows configuration absorbs parallel, angular and shaft end-play misalignments
  • Constant velocity even under misalignment
  • Identical clockwise and counter-clockwise rotational characteristics
  • Bellows available in stainless steel or phosphor bronze (Hub : Aluminum Alloy)
  • Finished products featuring two different end bore diameters available in stock.

product description

EP 1005 Metal Coupling

The shaft coupling is the connecting element between the electric motor and the pump hydraulic system. Slip-free shaft couplings employed in centrifugal pumps are divided into rigid and flexible shaft couplings.

Rigid shaft coupling

Rigid shaft couplings are mainly used to connect perfectly aligned shafts. The slightest misalignment results in considerable extra stress on shaft couplings and adjoining shaft ends.

Examples of rigid shaft coupling types

  • Sleeve coupling
  • Muff coupling
  • Serrated (splined) coupling
  • Split muff coupling (DIN 115)
  • Disc coupling
  • Flange coupling
  • Gear coupling

Flexible shaft coupling

Shaft couplings to DIN 7400 are resilient (flexible), slip-free connecting elements fitted between driving and driven components, capable of partially compensating axial, radial and angular misalignment and shock loads.
See Fig. 1 Shaft coupling

Shaft coupling: Misalignment typesFig. 1 Shaft coupling: Misalignment types

Flexibility is usually achieved by the deformation of dampening, rubber or metal-elastic spring elements; their service life is heavily dependent on the extent to which misalignment has to be compensated. Different flexible shaft coupling designs are available.
See Fig. 2 Shaft coupling

Shaft coupling: Coupling typesFig. 2 Shaft coupling: Coupling types

If shaft misalignment occurs between the driver and the pump as a result of, for example, temperature fluctuations in the fluid handled (on heat transfer and hot water pumps), the double-cardanic coupling type design is often employed.
See Fig. 3 Shaft coupling

Fig.3 Shaft coupling: Double-cardanic coupling for compensating shaft offset

Product Subscription

More than 20 years experience in research and development.

Including around 50 R&D Personnel

Total factory is 50,000 square meters

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