VẼ CƠ KHÍ Chapter 6 bearing structure and lubrication (1) (1)

A sealed deep groove ball bearing A cylindrical roller bearing... A spherical roller bearingWingquist developed self-aligning ball bearing from SKF Self aligning Sven Gustaf Wingqvist 18

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A sealed deep groove

ball bearing

A cylindrical roller bearing

A spherical roller bearing

Wingquist developed self-aligning ball bearing from SKF (Self aligning)

Sven Gustaf Wingqvist (1876–1953) was

a Swedish engineer, inventor and industrialist, and one of the founders of Svenska Kullagerfabriken (S.K.F.), one of the world's leading ball- and roller bearing makers Sven Wingqvist invented the multi- row self-aligning ball bearing in 1907.

SKF bearing field test on a Scania truck (1909) S Wingquist on backseat right.

Spherical plain bearing

Spherical plain bearing with ball bearings at the contact surface Outer race of ball bearing

Cast Iron Bearing Housing Thermoplastic Bearing Housing

A needle roller bearing

A tapered roller bearing

A thrust roller bearing A 4 point angular contact ball bearing

Metric rolling-element bearings have alphanumerical designations

to define all of the physical parameters The main designation

is a seven digit number with optional alphanumeric digits before

or after to define additional parameters Here the digits will be

defined as: 7654321 Any zeros to the left of the last defined digit are not printed; e.g a designation of 0007208 is printed 7208 Digits one and two together are used to define the inner diameter

(ID), or bore diameter, of the bearing For diameters between

20 and 495 mm, inclusive, the designation is multiplied by five to give the ID; e.g designation 08 is a 40 mm ID For inner diameters less than 20 the following designations

are used: 00 = 10 mm ID, 01 = 12 mm ID, 02 = 15 mm ID,

and 03 = 17 mm ID The third digit defines the "diameter series", which defines the outer diameter (OD) The diameter series,

defined in ascending order, is:

0 Ball radial single-row

1 Ball radial spherical double-row

2 Roller radial with short cylindrical rollers

3 Roller radial spherical double-row

4 Roller needle or with long cylindrical rollers

5 Roller radial with spiral rollers

6 Ball radial-thrust single-row

7 heavy vehicle bearings prepared

7 Roller tapered

8 Ball thrust, ball thrust-radial

9 Roller thrust or thrust-radial