Sprockets:Sprockets are a teethed wheel used to engage the links of a chain. The most common sprocket has a hub on one side (B hub) with a finished bore that includes a keyway and set screw to lock down on the shaft. Sprockets are also available in “C hub” where there is a hub on each side or “A hub” where the sprocket is flat with just a hole in the center. Sprockets are ordered by the size of the chain, the type of hub, number of teeth and the bore size. Example 40BS25 x 1 would call out #40 chain, 25 teeth with a 1” finished bore.
Sprockets are also available using QD or Taperlock Style Bushings, Hardened Tooth, Idlers. Sprockets are also made of plastic.
Belting:V-Belts run on 1 or more sheaves. They are made out of rubber with the inner part of the belt formed into a “V”. When manufactured, the rubber is reinforced with cord to provide support, protection and extend belt life. V-Belts come in a variety of different top widths and lengths. Listed below are the widths to help identify:
- 2L - .25” W
- 3L - .375” W
- 4L or A - .50” W
- 5L or B - .66” W
- C - .88” W
- D – 1.25” W
- E – 1.50” W
- 3V - .38” W
- 5V - .62” W
- 8V – 1.00” W
Banded V-Belts are basically single V-belts that are banded together at the top using rubber topped reinforced tensile cords. When shock loads and misalignment can cause single belts to whip, flip over or jump off the sheave, use a banded belt to help reduce replacement cost and downtime.
Timing Belts run on timing pulleys. The teeth mesh precisely with the teeth on the pulley for consistent speed. Most timing belts are made from Neoprene material with inside tensile cords but are also available in Polyurethane and can also be double sided (teeth on both sides)
Variable Speed belts run on variable speed sheaves that require exact speed control and max range of speed changes. They are resistant to shock loads and are constructed of synthetic fiber and rubber compounds resulting in the ability to endure high heat. They also are oil resistant. The construction of the belt adds to its service life.
Conveyor Belting is belting that runs on conveyors. They come in a multitude of lengths, widths, material and thicknesses. They are available with or without lacing.
The different types of belts listed above are not only available in standard inch sizes, but are also available in metric sizes also.
Couplings:Jaw Couplings, or Spider Couplings consist of a 3 piece unit, 2 hubs and a spider, sold individually. Jaw couplings are used to connect 1 or 2 different shaft sizes together and can allow for some misalignment. Spiders are available in Buna-N (Rubber), Hytrel, Urethane and Bronze. Hytrel and Bronze spiders increases max HP ratings by 3; Urethane spiders increase max HP ratings by 1.5. The hubs are available in inch and metric sizes.
Chain Couplings consist of 2 hubs with hardened sprocket teeth and a double width roller chain. This type of coupling offers a high torque capacity.
Flex Couplings are able to handle all combinations of shock, vibration and misalignment. They consist of 2 hubs and a sleeve. Hubs are available in inch and metric sizes, bushing type and spacers. The sleeves come as 1 piece solid, 1 piece split, 2 piece with a retaining ring and the material of the sleeve can be made out of Thermoplastic Rubber, EPDM or Hytrel
Seals:Oil Seals are used to close spaces between moving and non-moving components in equipment, helping to prevent lubricant escape. They also stop harmful contaminants from entering machinery. These seals are available in single lip, double lip, spring loaded and inch or metric sizes.
Mechanical Seals are most commonly used in pumps but are also found in mixer and agitator applications. They are available in inch and metric sizes.
Gears:Spur Gears are designed to transmit motion and power between parallel shaft applications.
Helical Gears are designed to transmit motion and power between 90 degree intersecting shafts and parallel shaft applications.
Miter & Bevel Gears are designed to transmit motion and power between 90 degree intersecting shaft applications.
Worms & Worm Gears are used for high ratio speed reduction, limited space, right angle shafts and non-intersecting shafts.
Most gears are made out of steel or brass and come in inch and metric sizes.