Insert ball bearings

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“h6h7h8h9h11
mmmin-1
179500600043001500950
208500530038001300850
257000450032001000700
30630040002800900630
35530034002200750530
40480030001900670480
45430026001700600430
50400024001600560400
55360020001400500360
60340019001300480340
65300017001100430300
70280016001000400280
8024001400900360240
9020001200800320200

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/CoreY
0.0250.222
0.0400.241.8
0.0700.271.6
0.1300.311.4
0.2500.371.2
0.5000.441

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).

Insert ball bearing housing units


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.