Is Nylon good for gears?

Machined nylon gears are typically used in applications that handle more torque and power. Typical applications for nylon gearing are conveyor systems, packaging equipment, and industrial automation. Many times, nylon is used as a gear material in order to reduce the noise of a metal gear train or to reduce vibration.

Is Delrin suitable for gears?

The most widely used DuPont resin for gears, Delrin® provides strength and stiffness without the need for glass fiber reinforcement. Often, just one gear made of Hytrel® is enough to reduce noise in an entire gear train.

How do you make plastic gear stronger?

Reinforcements. Glass and carbon fiber reinforcements increase the load capacity of plastic parts. Compounded into a thermoplastic resin, these fibers also increase the rigidity, and in the case of crystalline resins, the temperature range.

How are plastic gears made?

Plastic gears are manufactured with the same machining process as are metal gears, usually milling or hobbing. The very low cutting forces permit high infeed rates. This reduces manufacturing cost. Milling with high rates of infeed may produce a wavy, rough surface which may seem detrimental to long-term performance.

Should I grease plastic gears?

Wherever possible, you should lubricate plastic components to reduce friction and wear, and increase component life.

Are metal gears better than plastic?

Good shock absorption: Plastic gears are more forgiving than metal because plastic can deflect to absorb impact loads. It also does a better job of distributing localised loads caused by misalignment and tooth errors. Reduced noise: The superior noise-dampening properties of plastics result in a quiet running gear.

Is Delrin stronger than nylon?

Despite these similarities, nylon is generally stronger than Delrin. Extruded nylon has a tensile strength of 12,400 PSI and cast nylon has a tensile strength of between 10,000 and 13,500 PSI. In contrast, Delrin has a tensile strength of 10,000 PSI.

What type of plastic is acetal?

polyoxymethylene
Acetal plastic, also called polyacetal and polyoxymethylene (POM), is a general purpose, semi-crystalline, engineered thermoplastic. Acetal is commonly used for parts that need to be very stiff, have low surface friction and good dimensional stability.

Is Lithium Grease safe for plastic gears?

Lithium-based lubricants are used in cars and machinery in general. It’s not advisable to use them on plastic parts. As lithium is based on petroleum, it tends to speed up rubber and plastic components decay.

Can you use WD40 on plastic gears?

When applied to certain types of plastic, WD40 will slowly disintegrate and discolor the exposed surface. If left for a prolonged period, WD40 may begin breaking down the chemical structure. Crystalline plastics are generally safe while amorphous plastics are not.

What materials are used to make plastic gears?

Most of commercial plastic gears are nylon and modified nylon. Modified nylon may have fillers to stabilize the material and/or improve the lubricity by adding molybdenum or graphite powders. Acetal is sometimes used as it is more stable and has higher lubricity but it is relatively brittle so it isn’t used as much.

What is the best material to use for gear mating?

The gear which mates with a plastic gear can also be of plastic, but only in slow and lightly loaded applications. Otherwise, case-hardened steel is the best mating material because it dissipates friction heat quickly. The harder the steel, the slower the wear on the gear wheel and pinion.

Are plastics gears more reliable?

Plastic gears are more reliable when engineers account for material properties and manufacturing processes during design. Voice your opinion!

What type of nylon is used for gear gears?

The nylons used for gearing are typically type six, although type 12 is also known to be used. The designation of nylon type is determined by the number of methyl ethylene (CH 2) atoms on each side of the nitrogen atom in the polyamide chain.