Product Description

Tapered Roller Bearing 32307/Tractor Bearing/Auto Parts/Car Accessories/Roller Bearing

Feature

• Quality Materials
• Precision Tolerance
• Optimizing Internal Geometries

 

Sr.No.	Bearing No.	Dimension (MM)
		d	D	B
1	32004	20	42	12
2	32005	25	47	15
3	32006	30	55	17
4	32007	35	62	18
5	32008	40	68	19
6	32009	45	75	20
7	32571	50	80	20
8	32011	55	90	23
9	32012	60	95	23
10	32013	65	100	23
11	32014	70	110	25
12	32015	75	115	25
13	32016	80	125	29
14	32017	85	130	29
15	32018	90	140	32
16	32019	95	145	32
17	32571	100	150	32
18	35712	15	35	11.75
19	35713	17	40	13.25
20	35714	20	47	15.25
21	35715	25	52	16.25
22	35716	30	62	17.25
23	35717	35	72	18.25
24	35718	40	80	19.75
25	35719	45	85	20.75
26	35710	50	90	21.75
27	35711	55	100	22.75
28	35712	60	110	23.75
29	35713	65	120	24.75
30	35714	70	125	26.25
31	35715	75	130	27.25
32	35716	80	140	28.25
33	35717	85	150	30.5
34	35718	90	160	32.5
35	35719	95	145	32
36	30302	15	42	14.25
37	30303	15	47	15.25
38	30304	20	52	16.25
39	30305	25	62	18.25
40	30306	30	72	20.75
41	30307	35	80	22.75
42	30308	40	90	25.25
43	30309	45	100	27.25
44	3571	50	110	29.25
45	3571	55	120	31.5
46	3571	60	130	33.5
47	3571	65	140	36
48	3571	70	150	38
49	3571	75	160	40
50	32204	20	47	19.5
51	32205	25	52	19.25
52	32206	30	62	21.25
53	32207	35	72	24.25
54	32208	40	80	24.75
55	32209	45	85	24.75
56	32210	50	90	24.75
57	32211	50	100	26.75
58	32212	60	110	29.75
59	32213	65	120	32.75
60	32214	70	125	33.25
61	32215	75	130	33.25
62	32216	80	140	35.25
63	32217	85	150	38.5
64	32218	90	160	42.5
65	32305	25	62	25.25
66	32306	30	72	28.75
67	32307	35	80	32.75
68	32308	40	90	35.25
69	32309	40	100	38.25
70	32310	50	110	42.25
71	32311	55	120	45.5
72	32312	60	130	48.5
73	32313	65	140	51
74	7813E	65	110	30.5
75	7814E	70	117	33
76	7815E	75	135	44.8
77	7816E	80	140	45
78	31305	25	62	17
79	31306	30	72	21
80	31307	35	80	21
81	31308	40	90	23
82	31309	45	100	25
83	31310	50	110	27
84	31311	55	130	31.5
85	31312	60	130	31
86	31313	65	140	33
87	31314	70	150	38
88	7713	65	130	45
89	33005	25	47	17
90	33006	30	55	20
91	33007	35	62	20
92	33008	40	68	22
93	33009	45	75	24
94	33571	50	80	24
95	33011	55	90	27
96	33012	60	95	27
97	33013	65	100	27
98	33014	70	110	31
99	33015	75	115	31
100	33108	40	75	26
101	33109	45	80	26
102	33110	50	85	26
103	33111	55	95	30
104	33112	60	100	30
105	33113	65	110	34
106	33114	70	120	37
107	33115	75	125	37
108	33116	80	130	37
109	33117	85	140	41
110	33118	90	150	45
111	33205	25	52	22
112	33206	30	60	25
113	33207	35	72	28
114	33208	40	80	32
115	33209	45	85	32
116	33210	50	90	32
117	33211	55	100	35
118	33212	60	110	38
119	33213	65	120	41
120	33214	70	125	41
121	33215	75	130	41
122	LM11749/10	17.462	39.878	13.843
123	LM11949/10	19.05	45.237	15.494
124	LM12749/10	21.986	45.237	15.494
125	LM12749/11	21.986	45.974	15.494
126	LM12649/10	21.43	50.005	17.526
127	LM67048/10	31.75	59.131	15.875
128	LM78349/10	34.988	61.973	16.7
129	LM48548/10	34.925	65.088	18.034
130	LM300849/11	40.988	67.975	17.5
131	LM501349/10	41.275	73.431	19.558
132	LM157149/10	45.242	73.431	19.558
133	LM503349/10	45.987	74.976	18
134	LM603049/10	45.242	77.788	19.842
135	L45449/10	29	50.292	14.224
136	L44643/10	25.4	50.292	14.224
137	L44649/10	26.98	50.292	14.244
138	L68149/10	34.98	59.131	15.875
139	L68149/11	34.98	59.975	15.875
140	JL69349/10	38	63	17
141	M84548/10	25.4	57.15	19.431
142	M88048/10	33.338	68.262	22.225
143	HM88648/10	35.717	72.233	25.4
144	JLM104948/10	50	82	21.5
145	HM518445/10	88.9	152.4	39.688
146	32909	45	68	15
147	29590/29522	66.675	107.95	19.05
148	320/32	58	32	17

Product Description
 

• Tapered roller bearing normally be composed of a cup and a cone assembly, it precisely designed to manage both axial and radial load, even in the most unforgiving conditions . Single row tapered roller bearings are the most basic and widely used, CZPT built the first production lines in 1996 and today offers the world’s widest variety both in inch and metric sizes.
   
  1. with performance-enhancing features for severe-duty applications, VAFEM LM-Series wheel bearings help increase fuel efficiency, improve load-carrying capacity, fit in popular axle and hub designs – and simplify installation – helping you gain fleet uptime. Commercial Vehicle Hub Rebuild Kits are available for severe duty, dual and wide single tire applications .

 

• Design Attributes:

1. Raw material: Manufactured with reliable  super-clean chrome steel, these long-lasting bearings are designed to meet severe-duty application requirements.
2. Tight tolerances: Uniform internal geometry, including angle of contact for cones and rollers, creates a precise match between cup and cone – extending bearing life.
3. Precision profiles: Internal raceway profiles reduce stress on bearing components by distributing the loads evenly across contact surfaces – increasing load-carrying capacity.
4. Super finishing surface: Advanced automatic finishing processes generate smoother surface finishes on races and rollers to reduce friction – helping increase fuel efficiency.
5. Flexibility: Engineered for severe-duty applications in any configuration – dual and wide singles – LM-Series wheel bearings maintain consistency and simplicity within fleets.
6. Compatibility: LM-Series wheel bearings fit popular axle and hub designs, allowing retrofit into existing equipment.

Design Attributes:

• Accurate Bearing Setting: Set-Right kits feature bearings that significantly reduce the width variation found in standard bearings. Our tight bearing width tolerance enables consistent and accurate bearing setting of pre-adjusted hubs.
• Consistent Bearing Setting: Consistently achieve proper wheel bearing setting, avoiding the need for manual bearing adjustment and promoting optimum bearing and seal life.
• Streamlined Inventory Management: With a wide range of part numbers, each kit features 2 VAFEM  matched bearing sets and a precision-machined spacer (various of spacer types available).
• More Uptime: manufactured with super-clean high-strength chrome steel, precision profiles and enhanced surface finishes, feature high load ratings, and outlast and outperform competitor bearings.
  Longer Bearing Life and Performance

1. As a domestic leader in roller bearing technology, we develop bearings to outlast and outperform those frequently used on original equipment.

 
Applications
 

• Commercial vehicles  (original equipment and aftermarket)
• Wheel hub Kits ( After market )
• Heavy duty trucks, tractors and construction machinery (original equipment and aftermarket)

 

Screw Shaft Features Explained

When choosing the screw shaft for your application, you should consider the features of the screws: threads, lead, pitch, helix angle, and more. You may be wondering what these features mean and how they affect the screw’s performance. This article explains the differences between these factors. The following are the features that affect the performance of screws and their properties. You can use these to make an informed decision and purchase the right screw. You can learn more about these features by reading the following articles.

Threads

The major diameter of a screw thread is the larger of the 2 extreme diameters. The major diameter of a screw is also known as the outside diameter. This dimension can’t be directly measured, but can be determined by measuring the distance between adjacent sides of the thread. In addition, the mean area of a screw thread is known as the pitch. The diameter of the thread and pitch line are directly proportional to the overall size of the screw.
The threads are classified by the diameter and pitch. The major diameter of a screw shaft has the largest number of threads; the smaller diameter is called the minor diameter. The thread angle, also known as the helix angle, is measured perpendicular to the axis of the screw. The major diameter is the largest part of the screw; the minor diameter is the lower end of the screw. The thread angle is the half distance between the major and minor diameters. The minor diameter is the outer surface of the screw, while the top surface corresponds to the major diameter.
The pitch is measured at the crest of a thread. In other words, a 16-pitch thread has a diameter of 1 sixteenth of the screw shaft’s diameter. The actual diameter is 0.03125 inches. Moreover, a large number of manufacturers use this measurement to determine the thread pitch. The pitch diameter is a critical factor in successful mating of male and female threads. So, when determining the pitch diameter, you need to check the thread pitch plate of a screw.

Lead

In screw shaft applications, a solid, corrosion-resistant material is an important requirement. Lead screws are a robust choice, which ensure shaft direction accuracy. This material is widely used in lathes and measuring instruments. They have black oxide coatings and are suited for environments where rusting is not acceptable. These screws are also relatively inexpensive. Here are some advantages of lead screws. They are highly durable, cost-effective, and offer high reliability.
A lead screw system may have multiple starts, or threads that run parallel to each other. The lead is the distance the nut travels along the shaft during a single revolution. The smaller the lead, the tighter the thread. The lead can also be expressed as the pitch, which is the distance between adjacent thread crests or troughs. A lead screw has a smaller pitch than a nut, and the smaller the lead, the greater its linear speed.
When choosing lead screws, the critical speed is the maximum number of revolutions per minute. This is determined by the minor diameter of the shaft and its length. The critical speed should never be exceeded or the lead will become distorted or cracked. The recommended operational speed is around 80 percent of the evaluated critical speed. Moreover, the lead screw must be properly aligned to avoid excessive vibrations. In addition, the screw pitch must be within the design tolerance of the shaft.

Pitch

The pitch of a screw shaft can be viewed as the distance between the crest of a thread and the surface where the threads meet. In mathematics, the pitch is equivalent to the length of 1 wavelength. The pitch of a screw shaft also relates to the diameter of the threads. In the following, the pitch of a screw is explained. It is important to note that the pitch of a screw is not a metric measurement. In the following, we will define the 2 terms and discuss how they relate to 1 another.
A screw’s pitch is not the same in all countries. The United Kingdom, Canada, and the United States have standardized screw threads according to the UN system. Therefore, there is a need to specify the pitch of a screw shaft when a screw is being manufactured. The standardization of pitch and diameter has also reduced the cost of screw manufacturing. Nevertheless, screw threads are still expensive. The United Kingdom, Canada, and the United States have introduced a system for the calculation of screw pitch.
The pitch of a lead screw is the same as that of a lead screw. The diameter is 0.25 inches and the circumference is 0.79 inches. When calculating the mechanical advantage of a screw, divide the diameter by its pitch. The larger the pitch, the more threads the screw has, increasing its critical speed and stiffness. The pitch of a screw shaft is also proportional to the number of starts in the shaft.

Helix angle

The helix angle of a screw shaft is the angle formed between the circumference of the cylinder and its helix. Both of these angles must be equal to 90 degrees. The larger the lead angle, the smaller the helix angle. Some reference materials refer to angle B as the helix angle. However, the actual angle is derived from calculating the screw geometry. Read on for more information. Listed below are some of the differences between helix angles and lead angles.
High helix screws have a long lead. This length reduces the number of effective turns of the screw. Because of this, fine pitch screws are usually used for small movements. A typical example is a 16-mm x 5-inch screw. Another example of a fine pitch screw is a 12x2mm screw. It is used for small moves. This type of screw has a lower lead angle than a high-helix screw.
A screw’s helix angle refers to the relative angle of the flight of the helix to the plane of the screw axis. While screw helix angles are not often altered from the standard square pitch, they can have an effect on processing. Changing the helix angle is more common in two-stage screws, special mixing screws, and metering screws. When a screw is designed for this function, it should be able to handle the materials it is made of.

Size

The diameter of a screw is its diameter, measured from the head to the shaft. Screw diameters are standardized by the American Society of Mechanical Engineers. The diameters of screws range from 3/50 inches to 16 inches, and more recently, fractions of an inch have been added. However, shaft diameters may vary depending on the job, so it is important to know the right size for the job. The size chart below shows the common sizes for screws.
Screws are generally referred to by their gauge, which is the major diameter. Screws with a major diameter less than a quarter of an inch are usually labeled as #0 to #14 and larger screws are labeled as sizes in fractions of an inch. There are also decimal equivalents of each screw size. These measurements will help you choose the correct size for your project. The screws with the smaller diameters were not tested.
In the previous section, we described the different shaft sizes and their specifications. These screw sizes are usually indicated by fractions of an inch, followed by a number of threads per inch. For example, a ten-inch screw has a shaft size of 2” with a thread pitch of 1/4″, and it has a diameter of 2 inches. This screw is welded to a two-inch Sch. 40 pipe. Alternatively, it can be welded to a 9-inch O.A.L. pipe.

Shape

Screws come in a wide variety of sizes and shapes, from the size of a quarter to the diameter of a U.S. quarter. Screws’ main function is to hold objects together and to translate torque into linear force. The shape of a screw shaft, if it is round, is the primary characteristic used to define its use. The following chart shows how the screw shaft differs from a quarter:
The shape of a screw shaft is determined by 2 features: its major diameter, or distance from the outer edge of the thread on 1 side to the inner smooth surface of the shaft. These are generally 2 to 16 millimeters in diameter. Screw shafts can have either a fully threaded shank or a half-threaded shank, with the latter providing better stability. Regardless of whether the screw shaft is round or domed, it is important to understand the different characteristics of a screw before attempting to install it into a project.
The screw shaft’s diameter is also important to its application. The ball circle diameter refers to the distance between the center of 2 opposite balls in contact with the grooves. The root diameter, on the other hand, refers to the distance between the bottommost grooves of the screw shaft. These are the 2 main measurements that define the screw’s overall size. Pitch and nominal diameter are important measurements for a screw’s performance in a particular application.

Lubrication

In most cases, lubrication of a screw shaft is accomplished with grease. Grease is made up of mineral or synthetic oil, thickening agent, and additives. The thickening agent can be a variety of different substances, including lithium, bentonite, aluminum, and barium complexes. A common classification for lubricating grease is NLGI Grade. While this may not be necessary when specifying the type of grease to use for a particular application, it is a useful qualitative measure.
When selecting a lubricant for a screw shaft, the operating temperature and the speed of the shaft determine the type of oil to use. Too much oil can result in heat buildup, while too little can lead to excessive wear and friction. The proper lubrication of a screw shaft directly affects the temperature rise of a ball screw, and the life of the assembly. To ensure the proper lubrication, follow the guidelines below.
Ideally, a low lubrication level is appropriate for medium-sized feed stuff factories. High lubrication level is appropriate for larger feed stuff factories. However, in low-speed applications, the lubrication level should be sufficiently high to ensure that the screws run freely. This is the only way to reduce friction and ensure the longest life possible. Lubrication of screw shafts is an important consideration for any screw.