High-Intensity and Hi price gh Precision a wholesaler nd Wear Resistance Motorcycle Wheel Chain

Toote kirjeldus

HangZhou STAR MACHINE CZPT LOGY CO.,LTD. are one professional industry rollor chain factory , We have stamping, heat treatment, sorting, synthesis and other CZPT d production equipment.The company boasts several large precision CZPT d equipments, mordern methods for cess and precision instruments, so as to insure the good quality of CZPT rollor chains.Our rollor chains are widely used in motorcycle, combine harvester, metallurgical machinery, mining equipment, automated production line. We are the best suppliers of Chinese largest palletizing robot enterprises. And replace Japan, ZheJiang exported to CZPT pe, CZPT ica, Asia and other countries and regions.

BASIC INFO
SMCC roller chain is one of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc.

ISO Keti nr.	Keti nr.	Pitch P mm	Rulli läbimõõt d1max mm	Sisemiste plaatide vaheline laius b1min mm	Tihvti läbimõõt d2max mm	Tihvti pikkus		Sisemise plaadi sügavus h2max	Plaadi paksus t/Tmax	Tõmbetugevus Qmin	Keskmine tõmbetugevus Q0	Kaal meetri kohta q
						Lmax	Lcmax	Sisemise plaadi sügavus h2max	Plaadi paksus t/Tmax	Tõmbetugevus Qmin	Keskmine tõmbetugevus Q0	Kaal meetri kohta q
						mm	mm	mm	mm	kN/lbf	kN	kg/m²
–	9.525		6	9.5	4.5	18.6	20	9.3	1.85/1.50	11.80/2653	13.6	0.61
420	420	12.7	7.77	6.25	3.96	14.7	16.1	12	1.5	16.00/3597	17.6	0.55
–	420F3	12.7	7.77	6.4	3.97	15	16.6	11.8	1.60/1.45	16.00/3597	17.6	0.64
–	420HF1	12.7	7.77	6.25	3.96	17	18.4	12	2.03	16.00/3597	17.6	0.76
–	420HT	12.7	7.77	6.25	3.96	17	–	12	2.03	21.40/4811	23.5	0.76
428	428	12.7	8.51	7.75	4.45	16.7	18.2	11.8	1.6	17.80/4002	19.6	0.7
–	428F1	12.7	8.51	7.94	4.5	16.7	18.05	11.8	1.6	17.15/3855	19.4	0.71
–	428DS	12.7	8.51	7.94	4.45	17.9	19.3	12	1.85	18.62/4186	21	0.76
428MH	428H	12.7	8.51	7.85	4.45	18.8	19.9	11.8	2.03	20.60/4631	23.4	0.79
–	428HF1	12.7	8.51	7.85	4.45	17.9	19	11.8	1.8	19.50/4384	20.7	0.74
–	428HSH	12.7	8.51	7.75	4.45	20	–	12	2.42	27.00/6070	29.4	0.89
–	428HF4	12.7	8.51	7.94	4.5	18.9	20.1	11.8	2.03	20.50/4609	23.4	0.82
–	428HD	12.7	8.51	7.85	4.45	18.8	19.9	11.8	2.03	20.60/4631	23.4	0.85
–	428F3	12.7	8.51	7.85	4.45	16.7	18.2	11.7	1.6	17.80/4002	19.6	0.77
–	428F4	12.7	8.51	7.85	4.45	16.7	18.2	11.8	1.6	17.80/4002	19.6	0.72
520	520	15.875	10.16	6.25	5.08	17.5	19	15.09	2.03	26.50/5957	29.7	0.89
–	520F2	15.875	10.16	6.35	5.24	17.5	19.05	15.09	2.03	26.50/5957	29.7	0.97
–	520F3	15.875	10.16	6.48	5.08	17.5	19	15.09	2.03	26.50/5957	29.7	0.89
520MH	520MH	15.875	10.22	6.25	5.25	19	21.2	15.3	2.2	30.50/6857	33.6	–
–	520HD	15.875	10.16	6.35	5.34	18.6	20	15.09	2.2	35.00/7868	38.5	1.04
525	525	15.875	10.16	7.95	5.08	19.3	20.7	15.09	2.03	26.50/5957	29.7	1.06
525MH	525MH	15.875	10.22	7.85	5.25	21.2	23.2	15.3	2.2	30.50/6857	33.6	–
–	525HF1	15.875	10.16	7.95	5.08	20.9	22.3	15.09	2.42	26.50/5957	29.7	1.2
530	530	15.875	10.16	9.4	5.08	20.7	22.2	15.09	2.03	26.50/5957	29.7	1.06
–	530SH	15.875	10.16	9.4	5.08	22.1	–	15.09	2.42	32.80/7374	33.5	1.24
–	520F12	15.875	10.16	6.25	5.25	17.6	–	15	2.03	29.43/6615	32.3	0.98
–	520HF7	15.875	10.22	7.8	5.3	21.35	–	15.3	2.8/2.42	40.00/8992	44	1.43
630	630	19.05	11.91	9.4	5.94	23	24.8	18	2.42	35.30/7936	38.8	–

Keti nr.	Pigi P mm	Rulli läbimõõt d1 max mm	Width between inner plates b1 min mm	Tihvti läbimõõt d2 max mm	Tihvti pikkus		Inner plate depth h2 max mm	Plaadi paksus T max mm	Tõmbetugevus K min kN/lbf	Average tensile tugevus Q0 kN	Weight per meter q kg/m²
Keti nr.	Pigi P mm	Rulli läbimõõt d1 max mm	Width between inner plates b1 min mm	Tihvti läbimõõt d2 max mm	Lmax mm	Lcmax mm	Inner plate depth h2 max mm	Plaadi paksus T max mm	Tõmbetugevus K min kN/lbf	Average tensile tugevus Q0 kN	Weight per meter q kg/m²
420 OR	12.700	7.77	6.25	3.96	16.65	17.95	12.00	1.50	16.0/3599	17.00	0.62
420H OR	12.700	7.77	6.25	3.96	18.80	20.10	12.00	2.03	16.0/3599	17.00	0.74
428HVS	12.700	8.51	7.94	4.45	21.70	22.70	12.30	2.03	22.0/4946	23.00	0.85
50LD	15.875	10.16	9.53	5.08	23.40	24.60	15.09	2.03	22.2/5045	26.50	1.12
520 OR	15.875	10.16	6.70	5.30	21.20	22.30	15.09	2.20	32.0/7200	34.00	1.11
520F1 OR	15.875	10.16	6.25	5.30	21.20	22.30	15.09	2.20	32.0/7200	34.00	1.09
520F2 OR	15.875	10.16	9.65	5.30	24.10	25.50	15.09	2.20	32.0/7200	34.00	1.21
520V6	15.875	10.16	6.25	5.08	19.80	21.30	15.09	2.03	22.2/5045	26.50	0.96
520H OR	15.875	10.16	6.25	5.24	21.52	22.92	15.09	2.42	26.5/6571	29.60	1.26
525 OR	15.875	10.16	7.95	5.30	21.50	22.90	15.09	2.03	26.5/6571	29.60	1.30
525F1 OR	15.875	10.16	7.95	5.30	23.10	24.00	15.09	2.20	32.0/7200	34.00	1.16
520F14 OR	15.875	10.20	6.25	5.09	19.90	–	14.90	1.80	28.4/6391	30.60	0.92
525H OR	15.875	10.16	7.95	5.30	23.10	24.50	15.09	2.42	26.5/6571	29.60	1.44
530H OR	15.875	10.16	9.53	5.24	24.80	26.20	15.09	2.42	29.0/6524	30.00	1.39
630F1 OR	19.050	11.91	9.53	5.94	25.50	27.30	18.00	2.42	31.8/7149	35.00	1.50

ISO Keti nr.	Keti nr.	Pigi P mm	Bush diameter d1 max mm	Width between inner plates b1 min mm	Tihvti läbimõõt d2 max mm	Tihvti pikkus L max mm	Inner plate depth h2 max mm	Plaadi paksus t/T max mm	Tõmbetugevus K min kN/lbf	Average tensile tugevus Q0 kN	Weight per meter q kg/m²
–	25	6.350	3.30	3.18	2.31	7.90	6.00	0.80	3.5/795	4.6	0.15
25H	25H	6.350	3.30	3.18	2.31	8.90	6.00	1.04	4.8/1091	5.5	0.17
–	25H(E)	6.350	3.30	3.18	2.31	8.90	6.00	1.04	5.8/1304	6.4	0.18
–	25HF2	6.350	3.30	3.18	2.31	9.10	5.80	1.2/1.10	5.8/1304	6.4	0.19
–	25SHF1	6.350	3.30	3.18	2.01	8.95	5.90	1.04	4.8/1091	5.5	0.19
219H	219H	7.774	4.59	5.00	3.01	11.90	7.40	1.2/1.04	7.3/1641	8.0	0.28
–	*C219H	7.774	4.59	5.00	3.01	11.90	7.40	1.2/1.04	7.3/1641	8.0	0.33
–	219HT	7.774	4.59	4.60	3.01	12.15	7.55	1.4/1.3	6.6/1483	7.2	0.33
–	219HF2	7.774	4.59	4.50	3.01	11.90	7.40	1.4/1.3	6.6/1483	7.2	0.31
–	219HF1	7.785	4.60	4.50	3.28	13.00	7.00	2.0/1.40	9.0/2571	9.8	0.37
270H	270H	8.500	5.00	4.75	3.28	13.15	8.45	1.8/1.40	10.8/2428	11.9	0.43

Package & Delivery

SMCC Chains is one of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc.

Our CZPT chain was produced by machinery processing from raw materials to finished products and a full set of quality testing equipment. CZPT processing equipment include grinding machines, high speed punching machines, milling machines, high speed automatic rolling and assembling machine. Heat treatment was processed by continuous mesh belt conveyor furnace, mesh belt conveyor annealing furnace, CZPT d central control system of heat treatment, rotary furnace for chain component heat treatment, which ensure the stability and consistency of the key function of chain components.
We are the best suppliers of Chinese largest palletizing robot enterprises. These items are durable quality with affordable prices, replace of Japan chains, ZheJiang chains exported to CZPT pe, CZPT ica, Asia and other countries and regions.

KETTI EHITUS

^{Kaks erineva suurusega rullketti, mis näitavad konstruktsiooni.
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 CZPT 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 CZPT 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 CZPT as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.

MÄÄRIMINE

^{Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of CZPT transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]}

Samuti on palju kette, mis peavad töötama määrdunud tingimustes ning mida suuruse või tööpõhjuste tõttu ei saa tihendada. Näideteks on põllumajandustehnika, jalgrataste ja mootorsaagide ketid. Nendel kettidel on paratamatult suhteliselt suur kulumiskiirus, eriti kui operaatorid on valmis leppima suurema hõõrdumise, väiksema efektiivsuse, suurema müra ja sagedasema vahetamisega, kuna nad eiravad määrimist ja reguleerimist.

Many oil-based lubricants attract dirt and other particles, eventually forming an abrasive paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.

MOOTORRATTA KETIDE MÄÄRIMINE

^{Mootorratastega võrreldavatel suurtel kiirustel töötavaid kette tuleks kasutada koos õlivanniga. Tänapäevaste mootorrataste puhul pole see võimalik ja enamik mootorrattakette töötab kaitsmata. Seega kipuvad mootorrattaketid võrreldes muude rakendustega väga kiiresti kuluma. Need puutuvad kokku äärmuslike jõududega ning vihma, mustuse, liiva ja teesoolaga.}

Mootorratta ketid on osa jõuülekandest, mis edastab mootori CZPT veojõu tagarattale. Õigesti määritud ketid võivad käigukastis saavutada efektiivsuse 98% või rohkem. Määrimata ketid vähendavad oluliselt jõudlust ning suurendavad keti ja ketiratta kulumist.

Mootorrattakettide CZPT-määrdeainete hulgas on kahte tüüpi: pihustatavad määrdeained ja tilkõliga doseerimise süsteemid.

Spray lubricants may contain wax or PTFE. While these lubricants use tack additives to stay on the chain they can also attract dirt and sand from the road and over time produce a grinding paste that accelerates component wear.
Tilkõlisüsteemid määrivad ketti pidevalt ja kasutavad kerget õli, mis ei kleepu keti külge. Uuringud on näidanud, et tilkõlisüsteemid pakuvad parimat kulumiskaitset ja suurimat CZPT-säästu.

VARIANTIDE DISAIN

^{Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then one of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just two rows of plates on the outer sides of the chain, there may be three (“duplex”), four (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.}

Roller chain is made in several sizes, the most common CZPT ican National CZPT CZPT (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.

Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has one pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are CZPT and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.

KASUTAMINE

An example of two ‘ghost’ sprockets tensioning a triplex roller chain system
Rullkette kasutatakse madala ja keskmise kiirusega ajamites kiirusel umbes 180–240 meetrit minutis; suurematel kiirustel, umbes 600–914 meetrit minutis, kasutatakse aga kulumis- ja müraprobleemide tõttu tavaliselt kiilrihmasid.
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.
Valdav enamus automootoritest kasutab nukkvõlli(de) ajamiseks rullkette. Väga suure jõudlusega mootorites kasutatakse sageli hammasülekannet ja alates 1960. aastate algusest hakkasid mõned tootjad kasutama hammasrihmasid.
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.
Kettsae lõikeketid meenutavad pealiskaudselt rullkette, kuid on pigem seotud lehtkettidega. Neid veavad väljaulatuvad veolülid, mis aitavad ka ketti juhtplaadile kinnitada.

Sea Harrier FA.2 ZA195 CZPT (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 CZPT , 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.

JALGRATTA KETIDE KULUMISE OSAD

The lightweight chain of a bicycle with derailleur gears can snap (or rather, come apart at the side-plates, since it is normal for the “riveting” to fail first) because the pins inside are not cylindrical, they are barrel-shaped. Contact between the pin and the bushing is not the regular line, but a point which allows the chain’s pins to work its way through the bushing, and finally the roller, ultimately causing the chain to snap. This form of construction is necessary because the gear-changing action of this form of transmission requires the chain to both bend sideways and to twist, but this can occur with the flexibility of such a narrow chain and relatively large free lengths on a bicycle.

Chain failure is much less of a problem on hub-geared systems (e.g. CZPT dix 2-speed, Sturmey-Archer AW) since the parallel pins have a much bigger wearing surface in contact with the bush. The hub-gear system also allows complete enclosure, a great aid to lubrication and protection from grit.

KETTI TUGEVUS

The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. CZPT factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)^{[viidet vaja]}. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.

The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)². X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.

KETT STHangZhouRDS

Standardiorganisatsioonid (näiteks ANSI ja ISO) haldavad ülekandekettide konstruktsiooni, mõõtmete ja vahetatavuse standardeid. Näiteks järgmises tabelis on esitatud andmed ANSI standardist B29.1-2011 (CZPT täppisülekanderulliketid, lisaseadmed ja CZPT-d), mille on välja töötanud CZPT inseneride ühing (ASME). Vt viiteid.^[8]^[9]^[10] lisateabe saamiseks.

ASME/ANSI B29.1-2011 rullketi standardsuurused Suurus Samm Rulli maksimaalne läbimõõt Minimaalne tõmbetugevus CZPT mõõtekoormus 25

Suurus	Pigi	Maksimaalne rulli läbimõõt	Minimaalne tõmbetugevus CZPT	Koormuse mõõtmine
ASME/ANSI B29.1-2011 rullketi standardsuurused
25	0,250 tolli (6,35 mm)	0,130 tolli (3,30 mm)	780 naela (350 kg)	18 naela (8,2 kg)
35	0,375 tolli (9,53 mm)	0,200 tolli (5,08 mm)	1760 naela (800 kg)	18 naela (8,2 kg)
41	0,500 tolli (12,70 mm)	0,306 tolli (7,77 mm)	1500 naela (680 kg)	18 naela (8,2 kg)
40	0,500 tolli (12,70 mm)	0,312 tolli (7,92 mm)	3125 naela (1417 kg)	14 kg (31 naela)
50	0,625 tolli (15,88 mm)	0,400 tolli (10,16 mm)	4880 naela (2210 kg)	49 naela (22 kg)
60	0,750 tolli (19,05 mm)	0,469 tolli (11,91 mm)	7030 naela (3190 kg)	70 naela (32 kg)
80	1,000 tolli (25,40 mm)	0,625 tolli (15,88 mm)	12 500 naela (5700 kg)	125 naela (57 kg)
100	1,250 tolli (31,75 mm)	0,750 tolli (19,05 mm)	19 531 naela (8859 kg)	195 naela (88 kg)
120	1,500 tolli (38,10 mm)	0,875 tolli (22,23 mm)	28 125 naela (12 757 kg)	281 naela (127 kg)
140	1,750 tolli (44,45 mm)	1,000 tolli (25,40 mm)	38 280 naela (17 360 kg)	383 naela (174 kg)
160	2,000 tolli (50,80 mm)	1,125 tolli (28,58 mm)	50 000 naela (23 000 kg)	500 naela (230 kg)
180	2,250 tolli (57,15 mm)	1,460 tolli (37,08 mm)	63 280 naela (28 700 kg)	633 naela (287 kg)
200	2,500 tolli (63,50 mm)	1,562 tolli (39,67 mm)	78 175 naela (35 460 kg)	781 naela (354 kg)
240	3,000 tolli (76,20 mm)	1,875 tolli (47,63 mm)	112 500 naela (51 000 kg)	1000 naela (450 kg)

Mnemoonilise tähtsusega eesmärkidel on allpool esitatud sama standardi põhimõõtmed, väljendatuna tolli murdosades (mis oli osa ANSI standardi eelistatud numbrite valiku taga olevast mõtteviisist):

Samm (tollides)	Väljendatud helikõrgus kaheksandike kaupa	ANSI standard keti number	Laius (tollides)
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

Märkused:
1. Samm on rullide keskpunktide vaheline kaugus. Laius on lüliplaatide vaheline kaugus (st veidi suurem kui rullide laius, et oleks ruumi).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. Vasakpoolne number tähistab kaheksandiku tollide arvu, mis moodustavad helikõrguse.
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.

ISO standardi järgi valmistatud rullkette nimetatakse mõnikord isokettideks.

MIKS VALIDA MEID

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. Tõhus müügijärgne teenindussüsteem

219 komplekti CZPT d automaatseid tootmisseadmeid tagavad kõrge tootekvaliteedi. 167 inseneri ja tehnikut, kellel on kõrged kutsekvalifikatsioonid, saavad kavandada ja arendada tooteid, mis vastavad CZPT tootjate täpsetele nõudmistele, ning CZPT CZPT arendused on samuti meiega CZPT-s. Meie usaldusväärne ülemaailmne teenindusvõrk pakub CZPT tootjatele õigeaegset müügijärgset tehnilist teenindust.

Me pole mitte ainult tootja ja tarnija, vaid ka valdkonna konsultant. Teeme teiega ennetavat koostööd, et pakkuda asjatundlikku nõu ja tootesoovitusi, et teie konkreetse rakenduse jaoks välja töötada kõige kulutõhusam CZPT toode. Meie CZPT kliendid ulatuvad lõppkasutajatest turustajate ja CZPT tootjateni. Meie CZPT asendusosi saab vajadusel asendada ning need sobivad nii remondiks kui ka uute sõlmede jaoks.