DIN
DIN Chain No. |
Pitch |
Roller dimension |
|
di
max |
d4
max |
d6 max |
d7 max |
G |
mm |
|
|
|
|
|
|
mm |
mm |
mm |
mm |
mm |
FVC63 |
63.0 |
80.0 |
100.0 |
125.0 |
160.0 |
|
|
40.0 |
26.0 |
50.0 |
63.0 |
5.0 |
FVC90 |
63.0 |
80.0 |
100.0 |
125.0 |
160.0 |
200.0 |
250.0 |
48.0 |
30.0 |
63.0 |
78.0 |
6.5 |
FVC112 |
100.0 |
125.0 |
160.0 |
200.0 |
250.0 |
|
|
55.0 |
32.0 |
72.0 |
90.0 |
7.5 |
FVC140 |
100.0 |
125.0 |
160.0 |
200.0 |
250.0 |
|
- |
60.0 |
36.0 |
80.0 |
100.0 |
9.0 |
FVC180 |
125.0 |
160.0 |
200.0 |
250.0 |
315.0 |
|
|
70.0 |
42.0 |
100.0 |
125.0 |
13.0 |
FVC250 |
160.0 |
200.0 |
250.0 |
315.0 |
400.0 |
|
|
80.0 |
50.0 |
125.0 |
155.0 |
15.0 |
FVC315 |
160.0 |
200.0 |
250.0 |
315.0 |
400.0 |
|
|
90.0 |
60.0 |
140.0 |
175.0 |
18.0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
DIN
DIN Chain No. |
Width between inner plates bi min |
Pin diameter |
Bush diameter |
Pin length |
Plate thickness |
Plate depth |
Tensile strength |
d2
max |
d3 min |
d5 max |
L max |
Lc max |
T max |
h2 max |
mi |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
kVLbf |
FVC63 |
22.0 |
12.0 |
8.0 |
18.0 |
45.0 |
50.5 |
4.0 |
30.0 |
46.0/10454 |
FVC90 |
25.0 |
14.0 |
10.0 |
20.0 |
53.0 |
56.5 |
5.0 |
35.0 |
73.0/16590 |
FVC112 |
30.0 |
16.0 |
11.0 |
22.0 |
62.0 |
63.0 |
6.0 |
40.0 |
90.0/20454 |
FVC140 |
35.0 |
18.0 |
12.0 |
26.0 |
67.0 |
68.5 |
6.0 |
45.0 |
110.0/25000 |
FVC180 |
45.0 |
20.0 |
14.0 |
30.0 |
86.0 |
88.0 |
8.0 |
50.0 |
145.0/32954 |
FVC250 |
55.0 |
26.0 |
18.0 |
36.0 |
97.0 |
103.5 |
8.0 |
60.0 |
215.0/48863 |
FVC315 |
65.0 |
30.0 |
20.0 |
42.0 |
117.0 |
121.5 |
10.0 |
70.0 |
295.0/67044 |
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.
CONSTRUCTION OF THE CHAIN
Two different sizes of roller chain, showing construction.
There are two types of links alternating in the bush roller chain. The first type is inner links, having two inner plates held together by two sleeves or bushings upon which rotate two rollers. Inner links alternate with the second type, the outer links, consisting of two outer plates held together by pins passing through the bushings of the inner links. The "bushingless" roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing one step in assembly of the chain.
The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.
USE
An example of two 'ghost' sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive 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 perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal forward flight, a system known as Thrust vectoring.
CHAIN STANDARDS
Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25
ASME/ANSI B29.1-2011 Roller Chain Standard Sizes |
Size |
Pitch |
Maximum Roller Diameter |
Minimum Ultimate Tensile Strength |
Measuring Load |
25 |
0.250 in (6.35 mm) |
0.130 in (3.30 mm) |
780 lb (350 kg) |
18 lb (8.2 kg) |
35 |
0.375 in (9.53 mm) |
0.200 in (5.08 mm) |
1,760 lb (800 kg) |
18 lb (8.2 kg) |
41 |
0.500 in (12.70 mm) |
0.306 in (7.77 mm) |
1,500 lb (680 kg) |
18 lb (8.2 kg) |
40 |
0.500 in (12.70 mm) |
0.312 in (7.92 mm) |
3,125 lb (1,417 kg) |
31 lb (14 kg) |
50 |
0.625 in (15.88 mm) |
0.400 in (10.16 mm) |
4,880 lb (2,210 kg) |
49 lb (22 kg) |
60 |
0.750 in (19.05 mm) |
0.469 in (11.91 mm) |
7,030 lb (3,190 kg) |
70 lb (32 kg) |
80 |
1.000 in (25.40 mm) |
0.625 in (15.88 mm) |
12,500 lb (5,700 kg) |
125 lb (57 kg) |
100 |
1.250 in (31.75 mm) |
0.750 in (19.05 mm) |
19,531 lb (8,859 kg) |
195 lb (88 kg) |
120 |
1.500 in (38.10 mm) |
0.875 in (22.23 mm) |
28,125 lb (12,757 kg) |
281 lb (127 kg) |
140 |
1.750 in (44.45 mm) |
1.000 in (25.40 mm) |
38,280 lb (17,360 kg) |
383 lb (174 kg) |
160 |
2.000 in (50.80 mm) |
1.125 in (28.58 mm) |
50,000 lb (23,000 kg) |
500 lb (230 kg) |
180 |
2.250 in (57.15 mm) |
1.460 in (37.08 mm) |
63,280 lb (28,700 kg) |
633 lb (287 kg) |
200 |
2.500 in (63.50 mm) |
1.562 in (39.67 mm) |
78,175 lb (35,460 kg) |
781 lb (354 kg) |
240 |
3.000 in (76.20 mm) |
1.875 in (47.63 mm) |
112,500 lb (51,000 kg) |
1,000 lb (450 kg |
For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):
Pitch (inches) |
Pitch expressed
in eighths |
ANSI standard
chain number |
Width (inches) |
1⁄4 |
2⁄8 |
25 |
1⁄8 |
3⁄8 |
3⁄8 |
35 |
3⁄16 |
1⁄2 |
4⁄8 |
41 |
1⁄4 |
1⁄2 |
4⁄8 |
40 |
5⁄16 |
5⁄8 |
5⁄8 |
50 |
3⁄8 |
3⁄4 |
6⁄8 |
60 |
1⁄2 |
1 |
8⁄8 |
80 |
5⁄8 |
Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An "H" following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, "10 speed chain". Hub gear or single speed bicycles use 1/2" x 1/8" chains, where 1/8" refers to the maximum thickness of a sprocket that can be used with the chain.
Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at one and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.
Roller chains made using ISO standard are sometimes called as isochains.
WHY CHOOSE US
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed Worldwide Marketing Network
7. Efficient After-Sale Service System
The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve worldwide range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblie