High-Torque 28A Drive Sprocket for Construction Equipment Chains

• Customization: Available
• Standard Or Nonstandard: Nonstandard
• Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery, Car
• Model NO.: 28A
• Hardness: Hardened Tooth Surface
• Manufacturing Method: Rolling Gear
• Toothed Portion Shape: Spur Gear
• Material: Stainless Steel
• Type: Circular Gear
• Certification: CE, RoHS, ISO 9001:2000, ISO 9001:2008
• Condition: New
• Motor: AC Motor
• Drill Hole Diameter: >300mm
• Drill Hole Depth: >300m
• Bit Type: Diamond Bit
• Drilling Way: Compound
• After-Sales Service: 7*24hours
• Warranty: 1 Year
• Transport Package: Wooden Cases
• Specification: ALL KIND OF
• Trademark: SMCC OR NO MARK
• Origin: China
• HS Code: 8483409000
• Production Capacity: 10000000pieces/Year
• Package Size: 40.00cm * 30.00cm * 20.00cm
• Package Gross Weight: 50.000kg

Product Description

SPROCKET  28A SERIES SPROCKETS
 

28A   GB1244-85 DIN8188 ISO/R    606 ANSIB     29.1	Sprocket Tooth Parameters(mm)
	Pitch Roller Diameter Radius of Arc Chamfer Angle Width Rear Width Rear Width Rear Width Rear Width	P d-Φ r3 C B1 bi B B	44.15 25.40 47.50 5.80 23.50 22.90 71.90 121.19

 

 

 

 

  

 

 

 

 

 

 

 

Z	de	dp	Simplex			Duplex
			dm	Di	A	dm	D
8	132	116.15	74	25	70
9	146	129.96	88	25	70
10	160	143.85	100	25	70
11	174	157.77	112	25	70
12	188	171.74	125	25	70
13 14	204 218	185.75  199.76	125 125	25   25	70   70	145 145	30	120 120
15	232	213.79	125	25	70	145	30	120
16	246	227.84	160	30	75	145	30	120
17	260	241.90	160	30	75	160	30	120
18	274	255.98	160	30	75	160	30	120
19	289	270.66	160	30	75	180	30	120
20	303	284.15	160	30	75	180	30	120
21	317	298.24	160	30	75	180	30	120
22	331	312.34	160	30	75
23	345	326.44	160	30	75
24	359	340.55	160	30	75
25	373	354.66	160	30	75
26	387	368.77	160	30	75
27	401	382.88	160	30	75
28	416	397.00	160	30	75
29	430	411.12	160	30	75
30	444	425.24	160	30	75
31	458	439.37	180	30	75
32	472	453.49	180	30	75
33	486	467.62	180	30	75
34	500	481.75	180	30	75
35	514	495.88	180	30	75
36 37 38 39 40 42 45 48 50 54 57 60	529 543 557 571	510.01  524.13  538.27  552.40	180 180 180 180	30   30   30   30	75   75   75   75
	585 656 726 825 869	566.54  637.22  707.91  806.90  849.32	180 180 180 180 180	30   30	75   75
				30   30   30	75   75   75

 

 

 

BASIC INFO.

Type:	Simplex, Duplex,Triple
Sprocket Model:	3/8",1/2",5/8",3/4",1",1.25",1.50",1.75",2.00",2.25",2.00",2.25",2.50", 3"
Teeth Number:	8-60
Standard:	ANSI , JIS, DIN, ISO
Material:	1020, 1045, SS304 , SS316;  As Per User Request.
Performance Treatment:	Carburizing, High Frequency Treatment, Hardening and Tempering, Nitriding
Surface Treatment:	Black of Oxidation, Zincing, Nickelage.
Characteristic	Fire Resistant, Oil Resistant, Heat Resistant, Abrasive resistance, Oxidative resistance, Corrosion resistance, etc
Design criterion	ISO DIN ANSI & Customer Drawings
Application	Industrial transmission equipment
Package	Wooden Case / Container and pallet, or made-to-order
Certification:	ISO9001 SGS
Quality Inspection:	Self-check and Final-check
Sample:	ODM&OEM, Trial Order Available and Welcome
Advantage	Quality first, Service first, Competitive price, Fast delivery
Delivery Time	10 days for samples. 15 days for official order.

 

INSTALLATION AND USING

The chain spocket, 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 OEM 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 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 assemblies.