Product Description
SPROCKET 1” 1/4 X 3/4” 20B SERIES SPROCKETS
| For Chain Acc.to DIN8187 ISO/R 606 | |||||
| Tooth Radius r3 | 32.0mm | ||||
| Radius Width C | 3.5mm | ||||
| Tooth Width b1 | 18.2mm | ||||
| Tooth Width B1 | 18.5mm | ||||
| Tooth Width B2 | 54.6mm | ||||
| Tooth Width B3 | 91.0mm | ||||
| 20B SERIES ROLLER CHAINS | |||||
| Pitch | 31.75 mm | ||||
| Internal Width | 19.56 mm | ||||
| Roller Diameter | 19.05 mm | ||||
| Z | de | do | SIMPLEX | DUPLEX | TRIPLEX | ||||||
| dm | D1 | A | dm | D2 | A | dm | D3 | A | |||
| 8 | 98.1 | 82.96 | 53 | 20 | 40 | 53 | 20 | 75 | 53 | 20 | 110 |
| 9 | 108.0 | 92.84 | 63 | 20 | 40 | 63 | 20 | 75 | 63 | 20 | 110 |
| 10 | 117.9 | 102.74 | 70 | 20 | 40 | 70 | 20 | 75 | 70 | 20 | 110 |
| 11 | 127.8 | 112.68 | 77 | 20 | 45 | 80 | 20 | 80 | 80 | 20 | 115 |
| 12 | 137.8 | 122.68 | 88 | 20 | 45 | 90 | 20 | 80 | 90 | 20 | 115 |
| 13 | 147.8 | 132.65 | 98 | 20 | 45 | 100 | 20 | 80 | 100 | 20 | 115 |
| 14 | 157.8 | 142.68 | 108 | 20 | 45 | 110 | 20 | 80 | 110 | 20 | 115 |
| 15 | 167.9 | 152.72 | 118 | 20 | 45 | 120 | 20 | 80 | 120 | 20 | 115 |
| 16 | 177.9 | 162.75 | 120 | 20 | 50 | 120 | 25 | 80 | 120 | 25 | 115 |
| 17 | 187.9 | 172.78 | 120 | 25 | 50 | 120 | 25 | 80 | 120 | 25 | 115 |
| 18 | 198.0 | 182.85 | 120 | 25 | 50 | *120 | 25 | 80 | *120 | 25 | 115 |
| 19 | 208.1 | 192.91 | 120 | 25 | 50 | *120 | 25 | 80 | *120 | 25 | 115 |
| 20 | 218.1 | 202.98 | 120 | 25 | 50 | “120 | 25 | 80 | *120 | 25 | 115 |
| 21 | 228.2 | 213.04 | 140 | 25 | 55 | •140 | 25 | 80 | *140 | 25 | 115 |
| 22 | 238.3 | 223.11 | 140 | 25 | 55 | *140 | 25 | 80 | *140 | 25 | 115 |
| 23 | 248.3 | 233.17 | 140 | 25 | 55 | 140 | 25 | 80 | 140 | 25 | 115 |
| 24 | 258.4 | 243.23 | 140 | 25 | 55 | •140 | 25 | 80 | *140 | 25 | 115 |
| 25 | 268.5 | 253.33 | 140 | 25 | 55 | *140 | 25 | 80 | *140 | 25 | 115 |
| 26 | 278.6 | 263.40 | *150 | 25 | 55 | *150 | 25 | 80 | *150 | 25 | 115 |
| 27 | 288.6 | 273.49 | *150 | 25 | 55 | *150 | 25 | 80 | *150 | 25 | 115 |
| 28 | 298.7 | 283.56 | *150 | 25 | 55 | *150 | 25 | 80 | *150 | 25 | 115 |
| 29 | 308.8 | 293.65 | *150 | 25 | 55 | *150 | 25 | 80 | *150 | 25 | 115 |
| 30 | 318.9 | 303.75 | *150 | 25 | 55 | *150 | 25 | 80 | *150 | 25 | 115 |
| 31 | 329.0 | 313.85 | *150 | 25 | 55 | *150 | 25 | 80 | *150 | 30 | 115 |
| 32 | 339.1 | 323.91 | *150 | 25 | 55 | *150 | 25 | 80 | *150 | 30 | 115 |
| 33 | 349.2 | 334.01 | *150 | 25 | 55 | *150 | 25 | 80 | *150 | 30 | 115 |
| 34 | 359.3 | 344.10 | *150 | 25 | 55 | *150 | 25 | 80 | *150 | 30 | 115 |
| 35 | 369.4 | 354.20 | *150 | 25 | 55 | *150 | 25 | 80 | *150 | 30 | 115 |
| 36 | 379.5 | 364.30 | *150 | 25 | 55 | *150 | 30 | 80 | *150 | 30 | 115 |
| 37 | 389.5 | 374.39 | *150 | 25 | 55 | *150 | 30 | 80 | *150 | 30 | 115 |
| 38 | 399.6 | 384.49 | *150 | 25 | 55 | *150 | 30 | 80 | *150 | 30 | 115 |
| 39 | 409.7 | 394.59 | *150 | 25 | 55 | *150 | 30 | 80 | *150 | 30 | 115 |
| 40 | 419.8 | 404.69 | *150 | 25 | 55 | *150 | 30 | 80 | *150 | 30 | 115 |
| 41 | 429.9 | 414.77 | *150 | 25 | 70 | *160 | 30 | 90 | *160 | 30 | 110 |
| 42 | 440.0 | 424.86 | *150 | 25 | 70 | *160 | 30 | 90 | *160 | 30 | 110 |
| 43 | 450.1 | 434.96 | *150 | 25 | 70 | *160 | 30 | 90 | *160 | 30 | 110 |
| 44 | 460.2 | 445.06 | *150 | 25 | 70 | *160 | 30 | 90 | *160 | 30 | 110 |
| 45 | 470.3 | 455.17 | *150 | 25 | 70 | *160 | 30 | 90 | *160 | 30 | 110 |
| 46 | 480.4 | 465.25 | *150 | 25 | 70 | *160 | 30 | 90 | *160 | 30 | 110 |
| 47 | 490.5 | 475.35 | *150 | 25 | 70 | *160 | 30 | 90 | *160 | 30 | 110 |
| 48 | 500.6 | 485.45 | *150 | 25 | 70 | *160 | 30 | 90 | *160 | 30 | 110 |
| 49 | 510.7 | 495.55 | *150 | 25 | 70 | *160 | 30 | 90 | *160 | 30 | 110 |
| 50 | 520.8 | 505.65 | *150 | 25 | 70 | *160 | 30 | 90 | *160 | 30 | 110 |
| 51 | 530.9 | 515.75 | *150 | 25 | 80 | *160 | 30 | 100 | *180 | 30 | 123 |
| 52 | 541.0 | 525.85 | *150 | 25 | 80 | *160 | 30 | 100 | *180 | 30 | 123 |
| 53 | 551.1 | 535.95 | *150 | 25 | 80 | *160 | 30 | 100 | *180 | 30 | 123 |
| 54 | 561.2 | 546.05 | *150 | 25 | 80 | *160 | 30 | 100 | *180 | 30 | 123 |
| 55 | 571.3 | 556.15 | *150 | 25 | 80 | *160 | 30 | 100 | *180 | 30 | 123 |
| 56 | 581.4 | 566.25 | *150 | 25 | 80 | *160 | 30 | 100 | *180 | 30 | 123 |
| 57 | 591.5 | 576.35 | *150 | 25 | 80 | *160 | 30 | 100 | *180 | 30 | 123 |
| 58 | 601.6 | 586.45 | *150 | 25 | 80 | *160 | 30 | 100 | *180 | 30 | 123 |
| 59 | 611.7 | 596.56 | *150 | 25 | 80 | *160 | 30 | 100 | *180 | 30 | 123 |
| 60 | 624.8 | 606.66 | *150 | 25 | 80 | *160 | 30 | 100 | *180 | 30 | 123 |
| 62 | 642.0 | 626.86 | *150 | 25 | 80 | *160 | 30 | 100 | *180 | 30 | 123 |
| 64 | 662.2 | 647.07 | *150 | 25 | 80 | *160 | 30 | 100 | *180 | 30 | 123 |
| 65 | 672.3 | 657.17 | *150 | 25 | 80 | *160 | 30 | 100 | *180 | 30 | 123 |
| 66 | 682.4 | 667.27 | *150 | 25 | 80 | *180 | 30 | 100 | *200 | 30 | 123 |
| 68 | 702.6 | 687.48 | *150 | 25 | 80 | *180 | 30 | 100 | *200 | 30 | 123 |
| 70 | 722.8 | 707.68 | *150 | 25 | 80 | *180 | 30 | 100 | *200 | 30 | 123 |
| 72 | 743.1 | 727.89 | *150 | 25 | 80 | *180 | 30 | 100 | *200 | 30 | 123 |
| 75 | 773.3 | 758.20 | *150 | 25 | 80 | *180 | 30 | 100 | *200 | 30 | 123 |
| 76 | 783.3 | 768.32 | *150 | 25 | 80 | *180 | 30 | 100 | *200 | 30 | 123 |
| 80 | 823.9 | 808.71 | *150 | 25 | 80 | *180 | 30 | 100 | *200 | 30 | 123 |
| 85 | 874.4 | 859.23 | *150 | 25 | 90 | *180 | 30 | 100 | *200 | 30 | 123 |
| 90 | 924.9 | 909.76 | *150 | 25 | 90 | *180 | 30 | 100 | *200 | 30 | 123 |
| 95 | 975.2 | 960.28 | *150 | 25 | 90 | *180 | 30 | 100 | *200 | 30 | 123 |
| 100 | 1026.0 | 1571.80 | *150 | 25 | 90 | *180 | 30 | 100 | *200 | 30 | 123 |
| 114 | 1167.4 | 1152.26 | *150 | 25 | 90 | *180 | 30 | 100 | *200 | 30 | 123 |
Notice: *welding hub
BASIC INFO.
| Product name | DIN ISO Standard CZPT for Roller Chain |
| Materials Available | 1. Stainless Steel: SS304, SS316, etc |
| 2. Alloy Steel: C45, 45Mn, 42CrMo, 20CrMo, etc | |
| 3. CZPT according to your request | |
| Surface Treatment | Heat treatment, Quenching treatment, CZPT frequency normalizing treatment, Polishing, CZPT ctrophoresis paint processing, Anodic oxidation treatment, etc |
| Characteristic | Fire Resistant, Oil Resistant, Heat Resistant, CZPT resistance, Oxidative resistance, Corrosion resistance, etc |
| Design criterion | ISO DIN ANSI & CZPT er Drawings |
| Size | Customer Drawings & ISO standard |
| Application | Industrial transmission equipment |
| Package | Wooden Case / Container and pallet, or CZPT |
| Certificate | ISO9001: 2008 |
| Advantage | Quality first, Service first, Competitive price, CZPT delivery |
| Delivery Time | 20 days for samples. 45 days for official order. |
INSTALLATION AND USING
The chain spoket, as a drive or deflection for chains, has pockets to hold the chain links with a D-profile cross section with flat side surfaces parallel to the centre plane of the chain links, and outer surfaces at right angles to the chain link centre plane. The chain links are pressed firmly against the outer surfaces and each of the side surfaces by the angled laying surfaces at the base of the pockets, and also the support surfaces of the wheel body together with the end sides of the webs formed by the leading and trailing walls of the pocket.
NOTICE
When fitting new chainwheels it is very important that a new chain is fitted at the same time, and vice versa. Using an old chain with new sprockets, or a new chain with old sprockets will cause rapid wear.
It is important if you are installing the chainwheels yourself to have the factory service manual specific to your model. Our chainwheels are made to be a direct replacement for your CZPT chainwheels and as such, the installation should be performed according to your models service manual.
During use a chain will stretch (i.e. the pins will wear causing extension of the chain). Using a chain which has been stretched more than the above maximum allowance causes the chain to ride up the teeth of the sprocket. This causes damage to the tips of the chainwheels teeth, as the force transmitted by the chain is transmitted entirely through the top of the tooth, rather than the whole tooth. This results in severe wearing of the chainwheel.
FOR CHAIN STHangZhouRDS
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 CZPT Transmission Roller Chains, Attachments, and CZPT s) developed by the CZPT ican Society of CZPT Engineers (ASME). See the references[8][9][10] for additional information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile CZPT Measuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Standard Sizes | ||||
| Size | Pitch | Maximum Roller Diameter | Minimum Ultimate Tensile CZPT | 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. CZPT ble Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC CZPT s
3. Bespoke Solutions from CZPT ly Experienced Specialists
4. CZPT ization and CZPT Available for Specific Application
5. Extensive Inventory of CZPT Parts and Accessories
6. Well-Developed Worldwide Marketing Network
7. Efficient After-Sale Service System
The 219 sets of CZPT d 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 CZPT ers, and CZPT CZPT izations are also CZPT with us. Our sound global service network can provide CZPT ers 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 CZPT for your specific application. The clients we serve CZPT range from end users to distributors and CZPT s. Our CZPT replacements can be substituted wherever necessary and suitable for both repair and new assemblies.