UC200 SERIES

Insert ball bearings are mainly used in simple arrangements, e. g. in agricultural machines, conveyer devices, food processing machines, construction machines, etc.

Design specifications

Main dimensions

The main dimensions of insert ball bearings specified in the dimension tables are in accordance with the international standards ISO 2264 and DIN 626 T1. The dimensions of the rings are in accordance with the international standard ISO 3145.

Lubrication

The insert ball bearings do not require maintenance. The filling of the lubrication is usually sufficient for the whole operation life of the bearing.

Radial clearance

Insert ball bearings have radial clearance C3 in the range valid for the single row ball bearings.

Operation temperature

Insert ball bearings are filled with high quality plastic lubricant, which is suitable for maximum operation temperature 100°C and minimum temperature -30°C.

Limiting rotation speed

The limiting rotation speed of the insert ball bearings depends mainly on the arrangement on the shaft (see the following table).

Limiting rotation speed for various shaft diameter tolerances

Bore DiameterLimiting rotation speed with plastic lubricant for bearings type UA, UE, UD and UC with shaft diameter tolerance

 d            h6        h7        h8        h9        h11   mmmin-1

17         9500     6000     4300   1500      950

20         8500     5300     3800   1300      850

25         7000     4500     3200   1000      700

30         6300     4000     2800   900        630

35         5300     3400     2200   750        530

40         4800     3000     1900   670        480

45         4300     2600     1700   600        430

50         4000     2400     1600   560        400

55         3600     2000     1400   500        360

60         3400     1900     1300   480        340

65         3000     1700     1100   430        300

70         2800     1600     1000   400        280

80         2400     1400     900     360        240

90         2000     1200     800     320        200

Radial equivalent dynamic load

Radial equivalent dynamic load is calculated in the same way as for the standard ball bearings:

Pr = Fr

Pr = 0,56.Fr + Y.Fa

for Fa/Fr ≤ e

for Fa/Fr > e

Factors

Fa/Cor   e          Y

0.025   0.22       2

0.040   0.24      1.8

0.070   0.27      1.6

0.130   0.31      1.4

0.250   0.37      1.2

0.500   0.44       1

Insert ball bearings

Radial equivalent static load

Radial equivalent static load of insert ball bearings is calculated as follows:

Por = 0,6.Fr + 0,5.Fa

for (Por ≥ Fr)

Insert ball bearing housing units

Insert ball bearing housing units are made of cast iron and have a spherical hollow where the insert ball bearing is located. The bearing type is inserted according to the housing design request (UA, UC, UD, UE). The housing units are supplied as pillow block type (SG design) or flanged type (FG design).

Design specification

Application

The insert ball bearings with housing units are used mainly in agricultural machines, conveyor systems, food industry machines as insert bearing units. In general, they are used in arrangements, where the insert bearing unit provides an economical solution with simple arrangement design. For the purpose of potential re-lubrication, the housing units are equipped with grease nipple and grease duct leading straight to the bearing. Should the re-lubrication of insert bearing be not required by its operating conditions, the threaded hole can be plugged.

Main dimensions

The housing unit main dimensions are in the accordance with standards ISO 3228, the eccentric locking collar dimensions are in accordance with standards ISO 2145.

Designation

For designation of the housing units and complete insert bearing units see the following table.