Podcast
Questions and Answers
Chain drives operate in __
Chain drives operate in __
tension
__ on the driving sprocket engage with and pull chain link
__ on the driving sprocket engage with and pull chain link
teeth
Standard single strand roller chain contains __ that pivot inside __
Standard single strand roller chain contains __ that pivot inside __
pins; bushings
What is a strand of a roller chain?
What is a strand of a roller chain?
The larger the pitch, the __ number of links and the __ the load rating.
The larger the pitch, the __ number of links and the __ the load rating.
A __ pitch chain carries less load and provides quieter operation.
A __ pitch chain carries less load and provides quieter operation.
__ keep connecting link plates from working loose.
__ keep connecting link plates from working loose.
Standard strands of chain have an __ number of pitches and an __ number of pin links and roller links.
Standard strands of chain have an __ number of pitches and an __ number of pin links and roller links.
A __ is a combo of a roller link and a pin link.
A __ is a combo of a roller link and a pin link.
Standard roller chain is available with pitches from __ to __.
Standard roller chain is available with pitches from __ to __.
Chain drives are available with __ inch and __ inch pitches but with roller-less construction.
Chain drives are available with __ inch and __ inch pitches but with roller-less construction.
A 60-4 chain denotes a __ strand.
A 60-4 chain denotes a __ strand.
Sprockets for double pitch roller chain have __ teeth per link rather than __ teeth per link.
Sprockets for double pitch roller chain have __ teeth per link rather than __ teeth per link.
The type of lubrication employed in a chain drive may be the sole limiting factor in deterring the __ capacity.
The type of lubrication employed in a chain drive may be the sole limiting factor in deterring the __ capacity.
__ lubrication uses a pump to force oil onto the chain and joints.
__ lubrication uses a pump to force oil onto the chain and joints.
Speed ratios should not exceed __ in a single reduction for roller or silent chains.
Speed ratios should not exceed __ in a single reduction for roller or silent chains.
For most power applications, ratings for chain drives are based on a life of __ hours.
For most power applications, ratings for chain drives are based on a life of __ hours.
Chain drives lubricated manually operate most of the time with __.
Chain drives lubricated manually operate most of the time with __.
__ allow chain to act as a conveyor.
__ allow chain to act as a conveyor.
Double pitch conveyor chain conforms to __.
Double pitch conveyor chain conforms to __.
__ roller chains require no maintenance during their life.
__ roller chains require no maintenance during their life.
The most common type of self-lube roller chain contains special powdered metals which contain __.
The most common type of self-lube roller chain contains special powdered metals which contain __.
__ are designed to carry greater loads & withstand greater shock loads than standard series roller chains.
__ are designed to carry greater loads & withstand greater shock loads than standard series roller chains.
__ chains are capable of flexing around curves or twisting 90 degrees.
__ chains are capable of flexing around curves or twisting 90 degrees.
__ chains may be used with standard roller chain sprockets.
__ chains may be used with standard roller chain sprockets.
Corrosion resistant carbon steel chains are coated to resist corrosion but sacrifice __ as a result and have lower load ratings.
Corrosion resistant carbon steel chains are coated to resist corrosion but sacrifice __ as a result and have lower load ratings.
The distance between flexing joints in a roller chain is the __.
The distance between flexing joints in a roller chain is the __.
A number 40 chain has a pitch of __.
A number 40 chain has a pitch of __.
Extended pitch chain is also known as __.
Extended pitch chain is also known as __.
Corrosion resistant chain includes?
Corrosion resistant chain includes?
SC1012 indicates a silent chain of __.
SC1012 indicates a silent chain of __.
The type of chain lubrication that routes the chain through a shallow pool of oil is __.
The type of chain lubrication that routes the chain through a shallow pool of oil is __.
Standard single strand roller chain is made up of __.
Standard single strand roller chain is made up of __.
The advantageous characteristics of chain drives include __.
The advantageous characteristics of chain drives include __.
Highly corrosive environments for chains most likely occur in __.
Highly corrosive environments for chains most likely occur in __.
Double pitch conveyor chain conforms to __.
Double pitch conveyor chain conforms to __.
Leaf chains are often used in the following applications: __.
Leaf chains are often used in the following applications: __.
Sticker chains are designed to be used in which of the following industries: __.
Sticker chains are designed to be used in which of the following industries: __.
Free flow chains can be used to __.
Free flow chains can be used to __.
ANSI publishes standards for chains/sprockets. What do these standards cover: __.
ANSI publishes standards for chains/sprockets. What do these standards cover: __.
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Study Notes
Chain Drives Overview
- Chain drives operate under tension for effective power transmission.
- Driving sprocket teeth engage with chain links to transfer motion.
Chain Structure and Components
- Standard single strand roller chains consist of pins that pivot inside bushings.
- A roller chain strand combines alternating pin links and roller links.
- An offset link combines a roller link with a pin link for specific applications.
Chain Specifications
- Larger pitch results in a smaller number of links but a higher load rating.
- Standard roller chains are available with pitches ranging from 1/4" to 3".
- A number 60-4 chain represents a quadruple strand configuration.
- Sprockets for double pitch roller chains have 2 teeth per link, compared to 1 for standard chains.
Lubrication and Maintenance
- The type of lubrication can limit the horsepower capacity of chain drives.
- Type C lubrication employs pumps for consistent oil delivery to chains and joints.
- Manual lubrication often leads to either excessive or insufficient lubrication levels.
Performance and Lifespan
- Chain drive speed ratios should not exceed 10:1 in single reductions.
- Power rating for chain drives is based on a life expectancy of 15,000 hours.
- Self-lubricated roller chains require no maintenance throughout their operational life.
Chain Types and Applications
- Double pitch conveyor chains adhere to ASME B29.3 standards.
- Super series roller chains are designed for higher loads and greater shock resistance.
- Side bow chains can flex around curves or twist at 90 degrees.
- Leaf chains are specifically used in lifting applications.
- Sticker chains find use in thermoforming processes.
Corrosion Resistance and Durability
- Corrosion-resistant carbon steel chains are treated to resist corrosion but have lower load ratings due to reduced load capacity.
- Corrosion-resistant chains include materials such as stainless steel, nickel-plated steel, and zinc-nickel coatings.
Chain Length and Flexibility
- The distance between flexing joints in a roller chain is referred to as pitch length.
- Extended pitch chains are also known as double pitch drive chains.
Standards and Compliance
- ANSI and ASME publish standards for chain and sprocket specifications that cover various performance criteria.
- Chain drives have unlimited shelf life, making them a reliable choice for long-term applications.
Unique Chain Features
- Free flow chains promote the conveying and accumulating of products, allowing for faster transportation than chain speed.
- Specialized chains, such as those for thermoforming, cater to specific industry requirements.
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