Product Description

MXL, XL,L,H Type MSM Standard bore Timing Pulley

Shape:

Advantages:
1. Good quality products
2. Competitive prices
3. Fast delivery
4. Best after-sale service

Company Introduction: 
Hefa Produce items mainly include timing pulley series, precising grinding gear series and planetary gear reducer series. " Focus and Professional on the Development of Conveyor Field" is our CZPT aim.
We are a professional manufacturer, can produce the whole series of parts and meet various demands for different requests. We can also make the parts according to buyer's design or drawings.
We have introduced advanced equipment.

Basic Information:

Specification	Standard or Custom made
Material	Stainless steel,,brass, carbon steel, aluminum, and so on.
Surface Treatment	Zn-plating, Ni-plating, Cr-plating, Tin-plating, Copper-plating, the wreath oxygen resin spraying, black oxide coating, painting, powdering, color zinc-plated,blue black zinc-plated, silver plating,anodizing etc.
Main Products	Precision spur gear, Timing pulley, Bevel pulley, Worm& worm gear, Timing Belt..
Producing Equipment	CNC machine , automatic lathe machine,stamping machine,CNC milling machine,rolling machine, lasering, tag grinding machine etc.
Management System	ISO9001 - 2008
Testing Equipment	Projecting apparatus, Salt Spray Test, Durometer, and Coating thickness tester , 2D projector
Lead time	10-15 working days as usual, 30days in busy season, it will based on the detailed order quantity.
Delivery of Samples	By DHL, Fedex, UPS,  TNT, EMS
Main Markets	North America, South America, Eastern Europe , West Europe , North Europe, South Europe, Asia
How to order	* You send us drawing or sample
	* We carry through project assessment
	* We give you our design for your confirmation
	* We make the sample and send it to you after you confirmed our design
	* You confirm the sample then place an order and pay us 30% deposit
	* We start producing
	* When the goods is done, you pay us the balance after you confirmed pictures or tracking numbers.
	* Trade is done, thank you!!
Applications	Toy, Automotive, instrument, electrical equipment, household appliances, furniture, mechanical equipment,daily living equipment, electronic sports equipment, , sanitation machinery, market/ hotel equipment supplies, etc.

 
Packaging and Delivering:

Technical Profile:

 

Part Number				[ M ] Material			[ S ] Surface Treatment
Belt Width 19.1mm (3/4inch)	Belt Width 25.4mm (1inch)	Belt Width 38.1mm (1.5inch)	Belt Width 50.8mm (2 inches)	Pulley	Flange	Bushing	Pulley	Flange	Bushing
A: 21W: 26	A: 27W: 32	A: 40W: 45	A: 54W: 59
AW_ _HK191	AW_ _HK254	AW_ _HK381	AW_ _HK508	Aluminum Alloy 6061		1045 Carbon Steel	Clear Anodize		-
SF_ _HK191	SF_ _HK254	SF_ _HK381	SF_ _HK508	1045 Carbon Steel	Low Carbon Steel	1045 Carbon Steel	Black Oxide
SN_ _HK191	SN_ _HK254	SN_ _HK381	SN_ _HK508				Electroless Nickel Plating

Specifications:

Part Number			Pulley Shape	dH7 Range (Select Shaft Bore Dia. from Table 1)								P.D.	O.D.	F	E
				HK191		HK254		HK381		HK508
Type	Teeth	Type, Nominal Width		EShape	FShape	EShape	FShape	EShape	FShape	EShape	FShape
AW SF SN	14	HK191 *A: 21 *W: 26 HK254 *A: 27 *W: 32 HK381 *A: 40 *W: 45 HK508 *A: 54 *W: 59	E F	12~17	12~17	12~17	12~17	15~17	15~17	16~17	16~17	56.60	55.22	61	45
	15			14~20	14~20	14~20	14~20	15~20	15~20	16~20	16~20	60.64	59.27	67	50
	16			14~25	14~25	14~25	14~25	15~25	15~25	16~25	16~25	64.68	63.31	70	56
	17											68.72	67.35	80	60
	18											72.77	71.39
	19			14~32	14~32	14~32	14~32	15~32	15~32	16~32	16~32	76.81	75.44	87	67
	20											80.85	79.48	87	67
	21			14~35		14~35		15~35	15~35	16~35	16~35	84.89	83.52	95	75
	22											88.94	87.56
	24			19~35	19~32	19~35	19~32	19~35	19~35	19~35	19~35	97.02	95.65	104	84
	25			19~42		19~42		19~42	19~42	19~42	19~42	101.06	99.69	111	90
	26			20~42	20~32	20~42	20~30	20~42	20~42	20~42	20~42	105.11	103.73
	28											113.19	111.82	123	102
	30											121.28	119.90	127	105
	32					20~48		20~48		20~48	20~48	129.36	127.99	135	115
	34					20~50		20~50		20~50	20~50	137.45	136.07	144	125
	36									20~50	20~50	145.53	144.16	152	130
	38			-					25~42	-		153.62	152.24	165	140
	40											161.70	160.33	170	150
	42											169.79	168.41	180	155
	44											177.87	176.50	190	170
	48											194.04	192.67	205	180
	50											202.13	200.76	210	1

 

Table 1: Select Shaft Bore Diameter

dH7	Max. Allowable Torque Nm		D		(L)
	ST Bushing	SH Bushing	ST Bushing	SH Bushing
12	48	23	32	31	10.5
14	73	37	35	36	12
15	78	39	36	37
16	83	42	37	38	13
17	88	45	38	39
18	154	48	43	40	14
19	163	49	45	42
20	171	97	46	46
22	186	110	48	47
24	206	121	50	49
25	216	124	52	51
28	353	141	54	53	15.5
30	382	149	57	56
32	412	163	59	58	16.5
35	451	173	63	61
38	686	-	70	-	19
40	725		71
42	757		74		20
45	1490		84		24.5
48	1600		87
50	1660		89

Brand: HeFa or OEM/ ODM

 

Types of pulleys and their advantages and disadvantages

There are several types of pulleys. Learn the basic equations of the pulley system. Then learn about the different uses for pulleys. The disadvantages of using pulleys will be covered. Knowing these, you can buy the pulley that suits your needs. Here are some of the best pulley types and their pros and cons.

Basic equations of pulley systems

A pulley system is a mechanism that allows 2 blocks of a certain mass to be connected by a taut rope. The acceleration of each block is the same in magnitude and direction. The external force acting on each block is the weight of the block (10g) and the tension in the string. The tension between the 2 blocks is the total tension and the force acting on the pulley is the weight of the 2 blocks.
This simple mechanism uses 2 simple equations to explain how the system works. First, the mass of the weight on both sides of the pulley must be the same. When the weight is forced to move, the rope tightens and the second pulley descends. The weight is also attached to the second pulley and must be the same distance as the first pulley. This will result in a speed ratio of 2 times the distance covered by the first pulley.
Second, we have to calculate the force required to lift the object. The lower mass is supported by a wire configuration passing through all pulleys, while the uppermost pulley is used to apply the force. The lower block is used to support the weight. The applied force needs to travel a distance nx to move the weight. This distance, called MA, can be written as:
Once we have gathered the necessary information, we can apply the calculations to the pulley system. We can also use the Mechanical Advantage Calculator to calculate the force on the anchor. To do this, we must apply a force to the load as well as to the pulley itself. Using this equation, we can calculate the force required by the load to lift the load.

Types of pulleys

There are 3 basic types of pulleys: movable, fixed and compound. Both types of pulleys translate the force applied to them. The ideal mechanical advantage of pulleys is two. This is because a single movable pulley only doubles the force, whereas a compound pulley doubles or triples the force. This type of pulley is often used with other types of pulleys.
Movable pulls move with the weight of the load, and the force pulling them increases on the lift side. They are often found in utility elevators and construction cranes. These systems are very simple, inexpensive and quiet to use. The force required to lift the object depends on the mechanical advantage of the system. The 2 most common types of pulleys are listed below. Let's take a closer look at each one.
V-shaped pulleys are used in vehicles and electric motors. These pulleys require a "V" belt to function properly. Some have multiple "V" grooves to avoid slipping. They are used in heavy duty applications to reduce the risk of power slip. These pulleys also have more than 1 "V" groove. V-belt pulleys are commonly used in vehicles and electric motors.
Composite pulleys are made from more than 1 type of cable or rope wrapped around the wheel. They can be fixed or hinged and are usually made of stainless steel or bronze. Composite pulleys have multiple layers and can be a single unit or many different components. There are 3 main types of pulleys: fixed pulleys and composite pulleys. These are the most common types. Almost every type of pulley is used for some type of application.
Fixed pulleys have 1 advantage over movable pulleys: they change direction as the weight of the load increases. They are typically used in heavy construction equipment. Gun tackles, patio tackles, and stationary tackles are examples of equipment that use a pulley mechanism. These devices are very common and can be found on most modern construction sites. They provide great convenience for lifting large loads.

application

What are the applications of pulleys? Simply put, a pulley is a mechanical device that transforms a difficult task into an easier one. It consists of ropes and pulleys. It is usually used to lift objects. Usually, people wrap a rope around a pulley and pull up to lift the object. One disadvantage of using pulleys is that they require the same force as lifting the object directly.
One of the most popular applications of pulleys is lifting heavy objects. They help people pull up heavy objects and blocks. The system can also be used in seeders, lifts, grinders, etc. Other applications include raising flags, loading cargo, pulling curtains and rock or mountain climbing. Students can learn about the various uses of pulleys and the physics behind them.
Pulleys can be made of many different materials, depending on the application. Some are movable, which means they move with the object they are used to lift. This pulley system can be made of nylon, wire rope or fiber material. The best part about these systems is that they are easy to install and maintain. For a better grasp, use the guide or video tutorial to learn more about the pulley system and how it works.
Tapered pulleys are common in paper mills. They are high-quality pulleys that transmit power to connected parts. They can be dynamic or static and have different balances. Because pulley systems are highly customized, most industrial applications require systems designed specifically for specific applications. In this way, the system is safe, simple and inexpensive. The benefits of this design are endless.
The most common use of pulleys is for motor drives. They are used to minimize noise by applying force to the shaft to reduce the workload. They are also less expensive than gears and do not require lubrication. Furthermore, they can change the direction of the applied force. They are also less expensive than gears and are often used with other components. A screw is a cylindrical member with helical ribs used to connect something.

shortcoming

Although the pulley system makes it easier to move heavy objects, it still has some drawbacks. When using a pulley system, you must remember that the force required to lift the weight increases with the number of cycles. In addition, the distance between the puller and the heavy object increases, which may lead to accidents. Also, moving heavy objects can be tricky if the rope slips. Pulley systems are not very expensive and can be easily assembled. However, it does require a lot of space.
First, it is not efficient. Besides being inefficient, pulleys produce different forces at different speeds. Fixed pulleys use more force than the load, while movable pulleys move with the load. A movable pulley requires less force than a fixed pulley, but the combined system travels a long distance. Therefore, this method is not as efficient as the fixed method.
Pulleys are not only used in industrial processes. You can see them in various places in your daily life. For example, large construction cranes use pulleys to lift heavy loads. Even flagpoles, blinds, clotheslines, ziplines, motors and climbing equipment use pulleys. Still, despite their advantages, the disadvantages are not too serious.
Another disadvantage of the pulley is its wear and tear. While a pulley's housing is theoretically infinite, its bearings and locking components typically wear out over time. To overcome this problem, a new bearing and locking assembly can be installed. No need to replace the housing and shaft, the entire assembly can be re-bonded and painted to replicate the original look. Alternatively, the pulley can be replaced with a new housing and shaft.
Using pulleys can also reduce the advantage of pulleys. On the other hand, interception and tackle is a system in which 2 pulleys are connected to each other using ropes. Unlike pulleys, pulley pulley systems can be adjusted in the direction of travel and can move heavy loads up to 4 times their force when used in hydraulic lifts.