How Gears Work

In a miniature bevel gearbox, Bevel gears are useful when the direction of a shaft's rotation needs to be changed. They are usually mounted on shafts that are 90 degrees apart, but can be designed to work at other angles as well.
The teeth on bevel gears can be straight, spiral or hypoid. Straight bevel gear teeth actually have the same problem as straight spur gear teeth -- as each tooth engages, it impacts the corresponding tooth all at once.

Just like with spur gears, the solution to this problem is to curve the gear teeth. These spiral teeth engage just like helical teeth: the contact starts at one end of the gear and progressively spreads across the whole tooth.

On straight and spiral bevel gears of miniature bevel gearbox, the shafts must be perpendicular to each other, but they must also be in the same plane. If you were to extend the two shafts past the gears, they would intersect. The hypoid gear, on the other hand, can engage with the axes in different planes.

This feature is used in many car differentials. The ring gear of the differential and the input pinion gear are both hypoid. This allows the input pinion to be mounted lower than the axis of the ring gear. Since the driveshaft of the car is connected to the input pinion, this also lowers the driveshaft. This means that the driveshaft doesn't intrude into the passenger compartment of the car as much, making more room for people and cargo.

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Bevel gear Introduction

Two important concepts in gearing are pitch surface and pitch angle. The pitch surface of a gear is the imaginary toothless surface that you would have by averaging out the peaks and valleys of the individual teeth. The pitch surface of an ordinary gear is the shape of a cylinder. The pitch angle of a gear is the angle between the face of the pitch surface and the axis.

The most familiar kinds of bevel gears have pitch angles of less than 90 degrees and therefore are cone-shaped. This type of bevel gear is called external because the gear teeth point outward. The pitch surfaces of meshed external bevel gears are coaxial with the gear shafts; the apexes of the two surfaces are at the point of intersection of the shaft axes.

Bevel gears that have pitch angles of greater than ninety degrees have teeth that point inward and are called internal bevel gears.

Bevel gears that have pitch angles of exactly 90 degrees have teeth that point outward parallel with the axis and resemble the points on a crown. That's why this type of bevel gear is called a crown gear.

Miter gears are mating bevel gears with equal numbers of teeth and with axes at right angles.

Skew bevel gears are those for which the corresponding crown gear has teeth that are straight and oblique.

VF worm reducer developed based on NMRV worm reducer,which is more compact,beautiful.

Product model:VF30-VF90 

Configuration: Foot mounted ,Flange mounted

Solid shaft input ,IEC flange input

Hollow shaft output ,solid shaft output ,hollow shaft with shrink and torque arm.etc.

Input power:0.12-7.5KW 

Output speed:14-240 r/min

Output torque:not more than 500N.m

Worm Gearbox

1.Occupied samll space:the space requirement for the installation of output shaft is considerably large while assembling motor or reducer.The installation of hollow type reducer may form right angle with motor.Thus,facilitate miniaturiza of machine.

2.Self-locking:for the place require for minor holding force,save cost of braking device,such as in slope conveyors.

3.Fast stop:Ordinary gear reducer available in market requires 5-10seconds stop time,but NMRV gearbox need only 2-5 seconds to reach state of still.

4.High accommodation:You may selected from hollow shaft,uni-direction output shaft or dal output shaft,easy to modify,only one minute to complete disassemble and assemble of operator.

5.High safety:use transmission different from conventional nethod,no sprocket pulley needed.No exposed transmission structure reducer possibility of operator.

6.Good protection:water,dust proof,protection class can be IP55 ,good isolation to dust and misture.

7.Allow multiple sides installation,no restriction in angle:There are holes for mounting on all plains of the series of product for your selection of direction and angle required.

8.Good cooling effect:one formation aluminum alloy for casing,quigley heat dissipation extended life for worm lever,worm gear,good durability.

9.Easy maintenance:Different from conventional mounting method,you don't need disassemble the sprocket,pulley ,but only disassemble and assemble mounting base of the reducer to compete the modification easily.

10.Wide reduction ratio:Easily change reduction ratio from 5-20000 due to detached assemble.

Due to the unique combination of optimized worm wheel material with special lubricants, optimized shape, this powerful motor achieves high levels of efficiency and torque. The housing machined on all sides enables diverse mounting options. Double chamber shaft seals are used as standard.

The low contour design makes it suitable for implementing applications e.g. in the food industry. The housing has no recesses, which simplifies cleaning - a particularly essential feature for areas with stringent hygiene requirements.

The B Helical bevel gear motor series is the first product to prove equally good in regard to efficiency and versatility within a highly competitive context, both performance- and price-wise.

What the Cycloidal Speed Reducer is ?

 A cycloidal speed reducer or cycloidal drive is a mechanism for reducing the speed of an input shaft by a certain ratio. Cycloidal speed reducers are capable of relatively high ratios in compact sizes.

The input shaft drives an eccentric bearing that in turn drives the cycloidal disc in an eccentric, cycloidal motion. The perimeter of this disc is geared to a stationary ring gear and has a series of output shaft pins or rollers placed through the face of the disc. These output shaft pins directly drive the output shaft as the cycloidal disc rotates. The radial motion of the disc is not translated to the output shaft.

Cycloidal gear reducers