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Angular ball bearings that can receive a certain amount of axial (axial direction) load.
[Features]
・ The straight line connecting the contact points between the ball and the inner and outer rings has an angle with respect to the radial direction.
・ Radial load and unidirectional axial load can be applied.
・ When a radial load acts, an axial component force is generated, so 2 are generally used facing each other.
[Applications]
・ Ideal for machine tools, feed screw mechanisms, ball screw support units, etc.
Part Number
Configured Part Number is shown.
7208AL1
Mounting dimensional drawing
Mounting dimensional drawing
Angular ball bearings are non-separable bearings, and the straight line connecting the contact points between the ball and the inner and outer rings has a certain angle (contact angle) with respect to the radial direction. (Refer to Figure 1)The contact angle and contact angle symbol are shown in Table 1.
A radial load and a unidirectional axial load can be applied. Also, when a radial load acts, an axial component force is generated, so two are generally used facing each other. Table 2 shows the angular ball bearing,
Table 3 shows the combination angular ball bearings. For bearings with a contact angle of 15° and bearing accuracy of JIS 5 class or higher, refer to Precision Rolling Bearing (CAT. No. 2260/J).
Angular Ball Bearing
Contact Angle | 15° | 30° | 40° |
---|---|---|---|
Symbol of contact angle | C | A1) | B |
*1) Contact angle symbol A is omitted.
Classification | Features |
---|---|
Standard type | ・ The bearing series includes 79, 70, 72, 72B, 73 and 73B. ・ The contact angles are 30° and 40° (with B). ・ The standard retainer type depends on the bearing model number. (Please refer to Table 4) |
Combination Type | Features |
---|---|
Back combination (DB) | ・ It can receive radial load and axial load in both directions. ・ Since the distance l between the working points of the bearing is large, the load capacity of the moment load is large. ・ The allowable tilt angle is small. |
Front combination (DF) | ・ It can receive radial load and axial load in both directions. ・ The distance l between the working points of the bearing is small, and the load capacity of the moment load is small. ・ The permissible tilt angle is larger than the back combination. |
Parallel combination (DT) | ・ It can receive radial load and unidirectional axial load. ・ Since 2 pieces receive an axial load, a large axial load can be received |
Remarks 1. Since the bearings are manufactured as a set to adjust the internal clearance or preload amount of the bearings, bearings with the same product number must be used in combination.
Classification | Bearing series | Resin molding retainer | Pressed retainer | Machined retainer |
---|---|---|---|---|
Standard type | 79 70 72 73 72B 73B | 7904 to 7913 7000 to 7024 ― ― ― ― | ― ― 7200 to 7222 7300 to 7322 7200B~7222B 7300B~7322B | 7914 to 7960 7026 to 7040 7224 to 7240 7324 to 7340 7224B~7240B 7324B~7340B |
Note: The resin molding retainer cannot be used at high temperatures exceeding 120°C due to its material properties.
Part Number |
---|
7208AL1 |
Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | RoHS | Inner Dia. d (Ø) | Outer Dia. D (Ø) | Width B (mm) | Raceway Ring Shape | Bearing Type | Outer Ring Type | Inner/Outer Ring Material | Basic Dynamic Load Rating (N) | Specifications/Environment | Precision (JIS) | Load Direction | Rolling Element Material | Size Standards | Number of Raceway Ring Rows | Max. Allowable Rotational Speed (rpm) | Combination of Angular Contact Ball Bearings | Retainer Type | Sealing Structure | Types | Ordering Code | Contact angle symbol | Combination symbol | Preload Mark | Accuracy Symbol | Holder Symbol | Internal change symbol |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGD 39.00 | 1 Piece(s) | 7 Day(s) or more | 10 | 40 | 80 | 18 | Angular Bearing (Single) | Open Type | Flat | Steel | 35500 | Standard | Grade 0 | Radial | Steel | Metric System | Single Row | 9600 | - | Punching | - | 7*** series | - | A | - | - | - | L1 | - |
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