Power Transmission (Sprockets and Chains)
32Pages

Ramsey Products specializes in the design, manufacture,and application of silent chain drives, also known as inverted tooth or toothed chain drives. For more than 80 years this has been our focus, and today we remain committed to providing our customers with the world's widest range of top quality silent chain products.Because we specialize in silent chain, we understand howimportant it is to choose the right chain and sprockets for each application. Whether selecting components for a new application, replacing an existing chain, or custom designing a chain, our goal is to provide our...

Direction of chain travel Ramsey Two Pin Joint AB A Ramsey Silent Chain operating at high speed. Note thesmoothness and lack of vibration >

Paddle wheel drive on a large river boat Pipe spinner on oil drilling rigMain drive on plastic film extruder Diesel powered highway snow blowerFloating oil scavenger pump 4 >

Thick Waist Shot PeenedFull Radius Shaved Aperture Special Two Pin Joint Sprocket rotation Pitch circle 150 RPV404 120 > 90 60 > POWER CAPACITY IN KILOWATTS 30 #40 Roller chainToothed belt14mm x 25mm wide 2000 4000 6000 RPM > Power ratings are based on 33 tooth sprockets size="-1">

Thick waist Shaved aperture Shot peened ASME Standard tooth profile Full radius Special two pin joint > Maximized bearing surface Minimized break out >

Simply supply the part number along with the chain length in pitches, feet or meters. > Please specify the following details.o Product type: For example, RPV, RP, SC or competitors product type o Pitch: Best determined by measuring across 3 pin heads and dividing the measurement by 2. o Chain width across the links and across the heads o Guide type o Chain length in pitches, feet or meters > Simply fax, email, or mail the drawing to Ramsey. > Contact Ramsey. Our experienced sales engineers will be pleased to assist you in identifying a chain for your application. > Simply supply the part...

. For long life, sprockets should have a minimum of 21 teeth. For smoother, quieter drives use alarger number of teeth. > . Whenever possible, chain lengthshould be an even number of pitches so an offset section can be avoided. > . Ratios of 12:1 or greater are possible,but above 8:1 it is usually desirable to make the reduction in two steps. > . An idler sprocket or shoe canoften be used to maintain tension on fixed center drives. > The use of a wider than recommendedchain will result in a more rugged drive and improveddrive life. > . Center adjustment toallow for wear is always desirable....

1. Choose a service factor(SF) from the table on page 302. Compute the design power(Wd) by multiplying the power to betransmitted(W) by the service factor.3. Use the speed of the faster moving shaft(N1) to make a tentativepitch selection(p) from the chart below. 4. Select the number of teeth in the small sprocket(Z1), makingsure the sprocket can accommodate the shaft diameter.See maximum sprocket bores in sprocket tables.5. Use the following equations to calculate the required chainwidth(Cw). If the required chain width is not readily available it maybe necessary to go to a wider chain or a...

Proper drive lubrication is essential for a long service life. In sufficient quantities a lubricant penetrates chain joints to protect against corrosion, dissipate heat, cushion impact, and flush away debris. The chain width equations on page 24 presume that adequate lubrication is used.For most applications a good grade of non-detergent petroleum based oil is recommended. Multiviscosity oilsare not recommended. Generally greases and high viscosity oils are too thick to penetrate chain joints and should be avoided.A chain which does not receive sufficient lubrication will wear prematurely....

Bath -The lower strand of chain runs through an oil bath. The oil level should be such that the pitch line of thechain is just submerged. Also, to prevent excessive heat generation, only a short section of chain should run through the bath. Disc- A rotating disc picks up oil from a reservoir and directs it to the chain by means of a baffle or trough.Thechain is not submerged in oil. This method requires that the disc rim speed be between 4 m/s and 40 m/s.These methods may be suitable for chain speeds up to approximately 12 m/s > Lubricant is supplied in a continuous stream by a circulating...

Shaft parallelism should be checked before installing sprockets. Typically shafts should be parallel to within0.4 mm per meter. Ramsey should be consulted for applications where shafts are not horizontal. > Sprockets should be aligned on the shafts so there is little or no lateral offset between sprocket faces. Excessive wear will result if the sprockets are not properly aligned. > A variety of connector styles are used in Ramsey chain, depending on the chain type and customer preference. See page 29 for illustrations of the most common styles.During connection, It is very important that...

Bring the ends of the chain together so the holes are aligned Insert longer pin through the chain. Insert short pin so convex pin surfaces are in contact Install spirol roll pin > Bring the ends of the chain together so the holes are aligned Insert longer pin through the chain. Insert short pin so convex pin surfaces are in contact Put washer on pin and install cotter or spirol roll pin > Bring the ends of the chain together so the holes are aligned Insert longer pin through the chain. Insert short pin so convex pin surfaces are in contact Put washer on long pin and install cotter. >

STOKERS 1.1 DYNAMOMETERS Spinning frames, twisters, Wrappers1.0Batchers, calendars, looms1.1 Consult Ramsey Conical, revolving1.2 Rotary, gravel, stone, vibrating1.5 TEXTILE INDUSTRY SCREENS Calendars, rolls, tubers Tire-building, Banbury Mills1.5 Mixers, sheeters1.6 Extruders1.5 RUBBER & PLASTICS EQUIPMENT Centrifugal, gear, lobe, vane1.2 Dredge1.6 Pipe line 1.4 Reciprocating (3 or more cyl.)1.3 Reciprocating (1 or 2 cyl.)1.6 PUMPS Embossing, flat bed presses, folders1.2 Paper cutter, rotary press, linotype1.1 Magazine, Newspaper Presses1.5 PRINTING MACHINERY Agitators, bleachers1.1...