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Bevel gear set straight toothing modulus 3.5 R1: 2 Z = 16/32

Sprockets also exist without hub with module 6 steel C45

Sprocket without to or with hub module 1 steel C45

Sprocket without hub module 1.5 steel C45

Spur gear without hub module 2 steel C45

Sprocket including hub module 2.5 steel C45

Sprocket including hub module 3 steel C45

Sprocket including hub module 4 steel C45

Sprocket including hub module 5 steel C45

Sprocket including hub module 6, steel C45


Ordinary gears / cylindrical gears

In cylindrical gears you will find at the basic circle the profile of the teeth and the involute. The number of teeth and diameter ensures that you know the pitch and module of the sprocket.

  • With this you show that the gears roll and do not slide, and roll circles (make sure the teeth do slide over each other, and not just roll) and pitch circles

  • The gears also rotate as a pair, so angular acceleration (and thus vibration and noise) is reduced

In power transmission, many gears are made to a cylindrical profile.


The teeth of a gear are also regularly straight and therefore run parallel to the shaft. Unless it is a cylindrical shaft, the teeth are slanted. Only with a screw toothing are at least 2 teeth of two co-operating gears in contact with each other. Of course this is to prevent vibrations. Screw toothing You see a lot in gearboxes in the car industry, where a gear option has been added. Screw gears are incorrectly put in the box of bevel gears, but this is not correct, because bevel gears actually mean that the transmission is right angled. That is not the case.

However, bevel teeth also have downsides. This creates axial force when driving the gears, and gears threaten to slide away from each other. This can be prevented by applying a V-toothing. This way of manufacturing has been used for about 100 years now.


Bevel gears

Bevel gears provide the transmission of rotational movements between cutting shafts.


Hypoid gears

Hypoid gears can also be thought of as bevel gears. The shafts intersect here, which distinguishes them from other bevel gears.


Worm and worm gear

A worm and worm gear are a different type of gear, and have this name because of the spiral wheel. When the worm provides the drive for the worm wheel, you will see that the worm wheel turns slower than the worm itself. As a result, the worm gear has a high torque. Keep in mind that the worm gear reversed cannot be used as a drive for the worm. You could only drive the worm gear if you keep the teeth at an angle, which is inconvenient and not often done in practice.


Rack and pinion

A gear rack converts the rotating movement. In 100% of the cases this is a linear movement. Normally a rack is used with chains or drive belts.


Planetary gear mechanism

A system consisting of several toothed gears that have external teeth, and an internal toothed gear, in which the external teeth are placed. In most cases, the internally toothed gear is sitting. The planets revolve around the axis that way, and that's how the planet gear mechanism gets its name. However, there are also cases where the axis with the planet gears is stationary and we only turn those gears around their axis. This allows for an enormous gear ratio in a relatively small space.


Harmonic drive

A planetary gear mechanism has a large gear ratio, but a harmonic drive takes this up a notch.


Further terms include bevel gears, gears, motor pinions, worm gears, steel gears, star gears, and other gear combinations.





At GBS Machining Services we offer service in the repair and manufacture of standard gears, and special gears, such as high speed gearboxes. You can supply the material yourself, or we can arrange this for you. You can also contact us for all other types of gears. We can ensure that your gears are hardened, and test run your gearboxes so that you are sure of a gearbox with a long service life.


How do gears actually work?

The teeth of gears slide into each other with the rotation of the gears. Often one wheel is driven and the other gear is connected to an output shaft. This releases force into a rotating or linear movement. By using gears, you ensure that torque, acceleration, deceleration or energy can be transferred.

There are a huge number of tooth shapes, each with its own advantages and disadvantages. In the choice of gearing, the choice of material is also important, which in turn has its effects on the price and duration.



Most often you will encounter cylindrical gearing in the practical look. You see cylindrical teeth - as discussed earlier - especially with parallel shafts. Angled teeth are more common in crossed shafts. Such as bevel gears.

Speaking of bevel gears, the toothing shapes can differ, but think of helical toothing, klingelnberg toothing, Oerlikon toothing, Gleason toothing or spiral toothing.

There are different types of materials that are used for gears. It depends on the situation which material is best to choose. Some examples are stainless steel, stainless steel, steel, galvanized steel, blackened steel, nickel-plated steel. In addition, each material type has its own composition, which can also cause differences.

GBS Machining Services can manufacture and repair gears for you, of different sizes and in different shapes and types. We have several Niles gear grinding machines for this purpose, with which we can manufacture and repair gears with a diameter of 4 meters. A few examples of this are cylindrical gears with helical gearing, or straight gearing, or bevel gears with straight or angled gearing. You can also contact GBS Machining Services for sprockets with splines internal gearing, 'normal' internal gearing, gear racks, gear rings and worms or worms. You can of course also contact GBS Machining Services for a counter wheel.

In addition to gears, you can also contact GBS Machining Services for the manufacture and repair of gearboxes. We are brand independent in the maintenance and repair of your gearbox. We maintain and repair right angle gearboxes, high speed gearboxes, planetary gearboxes, and many more gearboxes.



Are you looking for a machine factory for the gears of your industrial gearbox? In addition to a large machine park, GBS Machining Services also has engineers with years of experience in engineering, reverse engineering, re-engineering and modification of gears and gearboxes.

When we talk about gear data, we are talking about many factors. There are many specialization branches, such as cylindrical module gears. When GBS Machining Services applies gearing, there are many types of machining that we apply. Think of sticking, grinding, honing, milling, CNC milling, finishing milling, hardening, annealing, to name just a few examples.

The tooth profile is also important to ensure that gears fit together well and therefore work well together. When properly adjusted, the tooth of one wheel will fit properly into the tooth well of the other wheel. When this is not properly adjusted, it creates more load, and a variable angular speed. Extra dental stress is of course something that must be prevented. When the gearbox is in operation, the teeth of two gears should roll together instead of rubbing, because friction causes more wear on the gears than rollers. Due to more wear on the gears, the teeth will have to be serviced earlier, which means more maintenance costs during the life of the gearbox.

How GBS Machining Services manufactures or repairs your gears. When machining the gears, it is important to achieve accurate tolerances. We dare to recommend the gear grinders that we employ as true artists. It has been more common for a gear manufacturer, or a machine factory, to fail to meet the tolerances of a particular gear. After a few weeks, this gear in question ended up at GBS Machining Services, and our gear grinders had the gear ready within a few days, within the dimensions. We think that is a shame, because our customer has lost a lot of time because of this.

To obtain an unambiguous agreement about the gear quality, the gear classes have been developed. Therefore, gears are divided into 12 classes. It defines the tolerance requirements for a gear. This ensures clarity. The standard for cylindrical gear classification that you will see most often is DIN 3962. Of course, if you require a different rating, you can consult with one of GBS Machining Services' technical sales engineers about the tolerance requirements of your gearing.

The quality class of the gears depends on the requirements for the components and how the gears are used.

The gear profile usually needs to be tailor-made for the specific gear. This means that the size and shape of a tooth opening must be exactly matched to the tool.


When milling and / or grinding your gears, we take into account, among other things, the size of the module, the pressure angle, the gear profile, your quality requirements for the gear. If you do not have a drawing of the gear, our engineering department can make a new drawing, which forms the basis for your new gear.

Production of gears

For many of our customers we produce gears to customer specifications. In all shapes and sizes and often in small quantities. Are you looking for a machine factory that specializes in the production of high-quality gears? Do your machines use non-standard gears that need to be replaced? Then Machinefabriek Goedhals from Amersfoort is the right place for you.

With the gear grinding machines from Niles we can process small gears for a high speed gearbox, but also up to a diameter of 4 meters. And if necessary, we work around the clock to manufacture your gears on time.

Manufacturing of gearboxes

We don't just focus on the production and manufacturing of gears, splines and racks. We also take care of the maintenance and repair of your gearboxes. We provide maintenance and repair 24/7, worldwide. We have the machines, the experience and the expertise to solve your gearbox problems and get you back on track quickly. You can contact us for the interior of gearboxes, worm gearboxes, right angle gearboxes, and more. We are independent of every industry and we maintain and repair every brand.

Manufacture racks

You can have racks produced at GBS Machining Services. If necessary, we can also engineer your racks. We produce racks for customers from every industry. So regardless of whether you are in the navy, offshore or energy, you can leave the production of your racks to GBS Machining Services. Our engineers, grinders, sales engineers have such experience to assist you and to think along with the production of your racks. Think of straight racks, curved racks, different tooth segments, round racks.


Fabricate spline teeth or spline connections

GBS Machining Services can manufacture your spline gears and spline connections. If necessary, we can also engineer your spline teeth and spline connections. We produce spline teeth and spline connections for every industry. Regardless of your industry, you can leave the production of your spline gears to GBS Machining Services, as well as your spline connections. Our colleagues have all the experience to think along with you on your challenge in spline teeth or spline cutting production.

Various types of gears and racks are manufactured by GBS Machining Services. Cylindrical gears are a type of gear wheel, and these are also available with straight or helical teeth. The cylindrical gears are available with straight and bevel gearing, and the bevel gears are also available with straight or bevel gearing. Internal gears also exist. Such as Spline gears, racks, worm gears and sprockets.



At GBS Machining Services we work with the following gear options, among others. Galvanized gears and racks, bronze bearing bushing gear, bronze gear, stainless steel gear, hardened teeth gear, blackened gear

We can produce GEARS with straight or helical teeth, hardened and also ground

We produce RACKS for you with straight or helical teeth, hardened, ground. If you are unsure about this, our sales engineers and engineers can assist you.

Klingelnberg gears produces GBS Machining Services with straight or bevel gearing. We also produce Klingelnberg gears with an arc tooth profile

WORM GEARS - WORMASSES Multi-pass worms, hardened and / or ground

SPECIAL GEARS are, for example, hirth gearing, spline bushings, internal gearing, bevel gearing, crown gearing


We don't care what type of toothing you need, whether you need repair or new ones. Our colleagues can produce your internal and external gears in a small edition, in a specialist manner. We manufacture straight bevel gears without any problem. We take on every challenge for you. Finally, our slogan in Thinking in Possibilities. Our quality controller ensures that your sprockets meet the requirements set by you for the sprockets that you have produced by us.

Straight and bevel gears are of course available, but GBS Machining Services also engineers and produces your spiral wheels, bevel gears with curved teeth. We can also harden it for you.

We supply all types of gears up to approximately 5 meters in diameter and pinion shafts up to approximately 10 meters in length. Gear wheels with hardened and / or ground teeth if required.

For a total impression of what we all do in the field of gears, please refer to the different tabs.

The gear transmission cylindrical gear has a crown gear in some cases. This is the crown wheel that is used for this specific gear transmission, a way by which the crown wheel is produced.

Concepts that we at GBS Machining Services work with in the field of gears are, module, tooth pitch, and dimple width. We also regularly talk about pressure angle, tooth angle, foot circle, pitch circle and top circle. The foot height and head height are also important.


Curvic plate coupling

A coupling that has existed for more than a century is the curvic plate coupling. This is also called hirth teeth. This was Mr. Albert Hirth's last name. Hirth toothing was a great invention at the time and hirth toothing is still used. GBS Machining Services can help you with this.


Load capacity of the gears

Hirth gearing and Hirth coupling are still applied as mentioned above. However, you will now mainly find it under the name curvic plate coupling. The curvic plate clutch was mass produced by an American factory. However, at GBS Machining Services you can mainly come to specialist machine machining work on your hirth teeth.


Spiral bevel gears

The curvic plate coupling evolved from the helical gears with conical shape. We can distinguish the curvic links in a number of types. First, there is the fixed curvic plate coupling. Then there are the universal curvic plate coupling and the decoupling coupling. The characteristics of these curvig plate couplings are that they can withstand a lot of load and are free of play. They also have excellent precision centering. We will come back to fixed curvig plate couplings.


Fixed curvic plate couplings

As mentioned before, the curvic fixed coupling has high precision. You will often find the fixed curvic coupling on turbines and compressor blades. You will also encounter them in space travel. The crankshafts of the curvic plate clutch are made of several parts.


Internal and external teeth of cylindrical gears

With our Niles gear grinding machines we can produce the highest quality cylindrical gears. It does not matter whether it concerns internal or external gearing. We employ a quality controller who takes care of the quality of the cylindrical gears and internal and external gearing. This way you can be sure that your cylindrical gear meets the correct quality requirements.

some common gear types are cylindrical gears, most gears are bevel gears and hypoid gears. These are worm and worm gear, rack and pinion, and planet gear, and harmonic drive.


Module of a gear

Gears are indicated with a module. The module refers to the pitch circle and the number of teeth placed on the gear. The ratio of this is called the module. The pitch circle refers to the distance from tooth to tooth, or the diameter that runs between the teeth. The pitch circle is referred to as module.

Terms used to designate the module are the number of teeth, the e-modulus, the module itself, the pressure angle, the tooth width and allowable contact stress.

With a pinion wheel, we use the terms diameter, base circle, roller circle, center distance, geometry factor, gear ratio and elasticity factor, mesh quotient and mesh factor. The allowable flank stress and roll pressure angle are also important, as well as the maximum tangential force.


Harden gears

A gear is generally a widely used product, and has been used in many industries. The quality of the material is important and hardening gears improves the quality of the gears. Curing is a heat process, which must be accomplished with accuracy.

The 4 most commonly used gear hardening methods are carbonization, carbonitriding and induction hardening. Spin hardening and ferritic nitrocarburizing are also often used. With carbonization and cabronitrating, high-quality gearing is ensured with a relatively simple process. This hardening technique gives you a tough core that prevents tooth breakage, but a hard, wear-resistant outside of the teeth.

Spider hardening is often used with large gears. The advantage of spin hardening is that it causes little deformation in the teeth.

Ferritic nitrocarburising can be used with relatively vulnerable gears. At least, with a geometry that is fragile. Due to the low temperature in a salt bath, the deformation of the gear is nil.


Double cure

The name says it all; with double hardening, a gear undergoes an extra hardening treatment. A treatment in which a part undergoes two hardening treatments, or first an annealing process and then a hardening process.

Types of gears

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