China Free Design Custom Mechanical Chain 50h-1 Engineering and Construction Machinery Industrial Transmission Heavy Duty Series Simplex Transmission Roller Chains and Bush Chains manufacturer

Solution Description

Heavy Duty Collection Simplex Roller Chains & Bush Chains

Chain No.


Roller diameter


between inner plates
Pin diameter


Pin length Inner
plate depth
Plate thickness


Tensile toughness


tensile energy
for every meter
q kg/m
50H-one fifteen.875 10.sixteen 9.40 five.08 23.4 fifteen.09 2.42 22.2/5045 30.two 1.25

*Bush chain:d1 in the table indicates the exterior diameter of the bush



Roller chain or bush roller chain is the kind of chain drive most typically utilized for transmission of mechanical power on a lot of sorts of domestic, industrial and agricultural machinery, which includes conveyors, wire- and tube-drawing machines, printing presses, autos, bikes, and bicycles. It is made up of a series of limited cylindrical rollers held with each other by aspect links. It is pushed by a toothed wheel referred to as a sprocket. It is a simple, reliable, and efficient means of power transmission.

Development OF THE CHAIN

Two distinct dimensions of roller chain, exhibiting design.
There are two varieties of back links alternating in the bush roller chain. The very first kind is internal backlinks, getting two inner plates held together by two sleeves or bushings CZPT which rotate two rollers. Internal hyperlinks alternate with the next kind, the outer links, consisting of two outer plates held jointly by pins passing through the bushings of the inner hyperlinks. The “bushingless” roller chain is equivalent in operation though not in development as an alternative of independent bushings or sleeves keeping the inner plates together, the plate has a tube stamped into it protruding from the gap which serves the same objective. This has the benefit of eliminating 1 phase in assembly of the chain.

The roller chain design lowers friction in comparison to simpler patterns, resulting in larger efficiency and much less wear. The unique electricity transmission chain varieties lacked rollers and bushings, with each the inner and outer plates held by pins which immediately contacted the sprocket enamel even so this configuration exhibited very speedy put on of both the sprocket teeth, and the plates where they pivoted on the pins. This dilemma was partly solved by the development of bushed chains, with the pins keeping the outer plates passing by way of bushings or sleeves connecting the internal plates. This distributed the put on above a greater location nevertheless the enamel of the sprockets nevertheless wore far more swiftly than is fascinating, from the sliding friction towards the bushings. The addition of rollers encompassing the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to use of each sprockets and chain as effectively. There is even quite minimal friction, as long as the chain is adequately lubricated. Constant, clean, lubrication of roller chains is of principal importance for successful operation as properly as correct tensioning.


A lot of driving chains (for illustration, in manufacturing unit equipment, or driving a camshaft within an internal combustion motor) function in thoroughly clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, several even in a sealed atmosphere this sort of as an oil bath. Some roller chains are designed to have o-rings developed into the space between the outside the house url plate and the within roller link plates. Chain manufacturers began to consist of this feature in 1971 right after the application was invented by Joseph Montano whilst working for Whitney Chain of Hartford, Connecticut. O-rings ended up provided as a way to enhance lubrication to the links of electricity transmission chains, a service that is vitally essential to extending their working lifestyle. These rubber fixtures type a barrier that retains manufacturing unit applied lubricating grease inside the pin and bushing put on places. More, the rubber o-rings avert grime and other contaminants from entering inside of the chain linkages, where this kind of particles would or else lead to significant dress in.[quotation essential]

There are also numerous chains that have to operate in filthy circumstances, and for size or operational motives cannot be sealed. Examples consist of chains on farm gear, bicycles, and chain saws. These chains will automatically have comparatively high charges of dress in, specifically when the operators are geared up to accept much more friction, less efficiency, much more sounds and much more frequent substitution as they neglect lubrication and adjustment.

Many oil-based mostly lubricants appeal to dirt and other particles, sooner or later forming an abrasive paste that will compound put on on chains. This difficulty can be circumvented by use of a “dry” PTFE spray, which forms a solid movie right after software and repels the two particles and humidity.


Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not getting employed for a high wear software (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding doorway on an oven), then a single of the less difficult kinds of chain may possibly nonetheless be used. Conversely, in which added sCZPT but the easy travel of a smaller pitch is essential, the chain may be “siamesed” as an alternative of just two rows of plates on the outer sides of the chain, there may possibly be 3 (“duplex”), 4 (“triplex”), or a lot more rows of plates running parallel, with bushings and rollers among each adjacent pair, and the very same variety of rows of tooth working in parallel on the sprockets to match. Timing chains on automotive engines, for case in point, normally have a number of rows of plates referred to as strands.

Roller chain is made in a number of sizes, the most widespread American Nationwide Standards Institute (ANSI) standards becoming forty, 50, 60, and eighty. The initial digit(s) point out the pitch of the chain in eighths of an inch, with the final digit getting 0 for common chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. As a result, a chain with half-inch pitch would be a #forty while a #160 sprocket would have enamel spaced 2 inches apart, and so on. Metric pitches are expressed in sixteenths of an inch as a result a metric #8 chain (08B-1) would be equal to an ANSI #forty. Most roller chain is created from simple carbon or alloy metal, but stainless metal is utilized in foodstuff processing equipment or other locations the place lubrication is a problem, and nylon or brass are from time to time noticed for the very same reason.

Roller chain is ordinarily hooked up utilizing a master url (also identified as a connecting link), which typically has one particular pin held by a horseshoe clip fairly than friction suit, allowing it to be inserted or eliminated with straightforward tools. Chain with a removable website link or pin is also acknowledged as cottered chain, which makes it possible for the duration of the chain to be modified. Half links (also recognized as offsets) are offered and are employed to enhance the length of the chain by a single roller. Riveted roller chain has the grasp website link (also recognized as a connecting hyperlink) “riveted” or mashed on the finishes. These pins are produced to be resilient and are not detachable.


An case in point of two ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are employed in lower- to mid-speed drives at all around 600 to 800 feet per moment nevertheless, at higher speeds, about 2,000 to 3,000 ft for each moment, V-belts are normally utilized owing to dress in and noise concerns.
A bicycle chain is a form of roller chain. Bicycle chains might have a master hyperlink, or may possibly require a chain device for elimination and set up. A similar but more substantial and thus stronger chain is utilised on most bikes even though it is sometimes replaced by either a toothed belt or a shaft generate, which supply lower sound stage and much less maintenance demands.
The excellent bulk of car engines use roller chains to push the camshaft(s). Very high performance engines usually use gear drive, and starting in the early nineteen sixties toothed belts have been used by some makers.
Chains are also used in forklifts utilizing hydraulic rams as a pulley to increase and lower the carriage however, these chains are not deemed roller chains, but are categorized as lift or leaf chains.
Chainsaw slicing chains superficially resemble roller chains but are far more carefully connected to leaf chains. They are driven by projecting drive back links which also serve to locate the chain onto the bar.

Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A probably abnormal use of a pair of motorbike chains is in the Harrier Jump Jet, in which a chain travel from an air motor is utilised to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for standard forward flight, a system known as Thrust vectoring.



The effect of dress in on a roller chain is to boost the pitch (spacing of the links), leading to the chain to develop more time. Notice that this is owing to use at the pivoting pins and bushes, not from real stretching of the metallic (as does take place to some flexible steel factors these kinds of as the hand-brake cable of a motor motor vehicle).

With present day chains it is uncommon for a chain (other than that of a bicycle) to wear until it breaks, considering that a worn chain qualified prospects to the rapid onset of use on the teeth of the sprockets, with ultimate failure getting the loss of all the teeth on the sprocket. The sprockets (in certain the smaller sized of the two) suffer a grinding movement that places a characteristic hook condition into the pushed experience of the teeth. (This impact is manufactured worse by a chain improperly tensioned, but is unavoidable no subject what treatment is taken). The worn enamel (and chain) no more time provides easy transmission of power and this could turn out to be evident from the sound, the vibration or (in automobile engines employing a timing chain) the variation in ignition timing witnessed with a timing gentle. Each sprockets and chain should be changed in these circumstances, given that a new chain on worn sprockets will not final extended. However, in much less extreme circumstances it could be feasible to conserve the more substantial of the two sprockets, considering that it is often the smaller sized a single that suffers the most wear. Only in really light-weight purposes this kind of as a bicycle, or in extreme cases of inappropriate stress, will the chain usually leap off the sprockets.

The lengthening owing to put on of a chain is calculated by the subsequent system:

M = the length of a number of links calculated

S = the amount of hyperlinks measured

P = Pitch

In sector, it is usual to keep an eye on the motion of the chain tensioner (whether or not guide or computerized) or the actual length of a drive chain (a single rule of thumb is to change a roller chain which has elongated 3% on an adjustable push or 1.5% on a fixed-center generate). A simpler technique, particularly ideal for the cycle or bike consumer, is to try to pull the chain away from the more substantial of the two sprockets, whilst making certain the chain is taut. Any considerable motion (e.g. making it achievable to see via a gap) most likely implies a chain worn up to and over and above the limit. Sprocket damage will end result if the problem is disregarded. Sprocket use cancels this effect, and could mask chain wear.


The most common evaluate of roller chain’s sCZPT is tensile energy. Tensile sCZPT represents how much load a chain can face up to beneath a one-time load before breaking. Just as critical as tensile sCZPT is a chain’s exhaustion strength. The critical elements in a chain’s exhaustion sCZPT is the quality of metal utilized to manufacture the chain, the heat remedy of the chain components, the high quality of the pitch hole fabrication of the linkplates, and the variety of shot furthermore the depth of shot peen coverage on the linkplates. Other aspects can include the thickness of the linkplates and the style (contour) of the linkplates. The rule of thumb for roller chain working on a continuous generate is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the kind of master links utilized (press-fit vs. slip-fit)[quotation necessary]. Roller chains functioning on a continuous drive beyond these thresholds can and typically do fall short prematurely by means of linkplate tiredness failure.

The regular bare minimum supreme sCZPT of the ANSI 29.1 metal chain is twelve,five hundred x (pitch, in inches)2. X-ring and O-Ring chains tremendously reduce put on by means of internal lubricants, rising chain existence. The inside lubrication is inserted by signifies of a vacuum when riveting the chain with each other.


Requirements organizations (this sort of as ANSI and ISO) maintain requirements for design and style, proportions, and interchangeability of transmission chains. For example, the pursuing Desk demonstrates knowledge from ANSI standard B29.1-2011 (Precision Electrical power Transmission Roller Chains, Attachments, and Sprockets) designed by the American Modern society of Mechanical Engineers (ASME). See the references[8][9][ten] for further info.

ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Greatest Tensile StrengthMeasuring Load25

ASME/ANSI B29.1-2011 Roller Chain Normal Dimensions
Measurement Pitch Greatest Roller Diameter Bare minimum Ultimate Tensile Strength Measuring Load
twenty five .250 in (6.35 mm) .130 in (3.30 mm) 780 lb (350 kg) eighteen lb (8.2 kg)
35 .375 in (9.fifty three mm) .two hundred in (5.08 mm) one,760 lb (800 kg) 18 lb (8.2 kg)
forty one .five hundred in (12.70 mm) .306 in (7.77 mm) 1,500 lb (680 kg) 18 lb (8.2 kg)
forty .500 in (twelve.70 mm) .312 in (7.92 mm) three,one hundred twenty five lb (1,417 kg) 31 lb (fourteen kg)
50 .625 in (15.88 mm) .four hundred in (10.16 mm) four,880 lb (2,210 kg) forty nine lb (22 kg)
sixty .750 in (19.05 mm) .469 in (eleven.91 mm) 7,030 lb (3,190 kg) 70 lb (32 kg)
80 one.000 in (twenty five.40 mm) .625 in (15.88 mm) 12,five hundred lb (5,seven-hundred kg) one hundred twenty five lb (fifty seven kg)
one hundred 1.250 in (31.75 mm) .750 in (19.05 mm) 19,531 lb (8,859 kg) 195 lb (88 kg)
one hundred twenty one.500 in (38.ten mm) .875 in (22.23 mm) 28,a hundred twenty five lb (twelve,757 kg) 281 lb (127 kg)
one hundred forty 1.750 in (44.45 mm) one.000 in (25.forty mm) 38,280 lb (seventeen,360 kg) 383 lb (174 kg)
160 2.000 in (50.eighty mm) 1.a hundred twenty five in (28.fifty eight mm) fifty,000 lb (23,000 kg) 500 lb (230 kg)
180 2.250 in (fifty seven.15 mm) one.460 in (37.08 mm) 63,280 lb (28,700 kg) 633 lb (287 kg)
200 2.500 in (sixty three.fifty mm) 1.562 in (39.67 mm) seventy eight,a hundred seventy five lb (35,460 kg) 781 lb (354 kg)
240 three.000 in (76.twenty mm) 1.875 in (forty seven.sixty three mm) 112,five hundred lb (fifty one,000 kg) 1,000 lb (450 kg

For mnemonic functions, underneath is another presentation of essential proportions from the very same normal, expressed in fractions of an inch (which was part of the pondering behind the option of chosen quantities in the ANSI normal):

Pitch (inches) Pitch expressed
in eighths
ANSI normal
chain number
Width (inches)
onefour 2eight 2five one8
3eight threeeight threefive 316
1two four8 4one one4
12 four8 four 5sixteen
fiveeight fiveeight five 3eight
34 6eight 6 12
1 eighteight 8 fiveeight

one. The pitch is the length amongst roller centers. The width is the distance between the hyperlink plates (i.e. somewhat a lot more than the roller width to let for clearance).
two. The correct-hand digit of the standard denotes 0 = typical chain, 1 = lightweight chain, 5 = rollerless bushing chain.
three. The left-hand digit denotes the quantity of eighths of an inch that make up the pitch.
4. An “H” subsequent the standard quantity denotes heavyweight chain. A hyphenated amount pursuing the normal number denotes double-strand (2), triple-strand (3), and so on. Therefore 60H-3 denotes amount 60 heavyweight triple-strand chain.
 A typical bicycle chain (for derailleur gears) makes use of slim 1⁄2-inch-pitch chain. The width of the chain is variable, and does not have an effect on the load capacity. The more sprockets at the rear wheel (historically 3-6, today 7-twelve sprockets), the narrower the chain. Chains are offered in accordance to the amount of speeds they are created to perform with, for case in point, “ten pace chain”. Hub gear or solitary velocity bicycles use 1/2″ x 1/8″ chains, the place 1/8″ refers to the optimum thickness of a sprocket that can be used with the chain.

Usually chains with parallel shaped links have an even number of hyperlinks, with every narrow link adopted by a broad one. Chains created up with a uniform kind of website link, narrow at a single and broad at the other end, can be made with an odd variety of back links, which can be an edge to adapt to a special chainwheel-distance on the other side this kind of a chain tends to be not so sturdy.

Roller chains made utilizing ISO standard are sometimes known as as isochains.


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We are not just a company and provider, but also an market consultant. We operate professional-actively with you to offer professional advice and product suggestions in order to conclude up with a most value efficient product available for your particular software. The customers we serve around the world assortment from conclude customers to distributors and OEMs. Our OEM replacements can be substituted wherever needed and suited for equally restore and new assemblies.





The atmosphere in which the roller chain is utilised and the work it performs will have an effect on which roller chain is used and how often you will need to have to substitute it. Rest certain that roller chains are one particular of the most successful and productive choices for electrical power transmission and transportation programs. You will find roller chains most commonly used for mechanical energy transmission in industrial machinery and item conveyance during production amenities. Standard Industries: Meals, Beverage, Materials, Packaging, Automotive, Metals, Development, Mining

China Free Design Custom Mechanical Chain 50h-1 Engineering and Building Equipment Industrial Transmission Weighty Obligation Sequence Simplex Transmission Roller Chains and Bush Chains     maker