Schaeffler Product catalogue - medias
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Housing units
Features
 

INA housing units are available as plummer block, flanged and take-up housing units in numerous different designs. The units are ready-to-fit and comprise INA cast iron or sheet steel housings in which INA radial insert ball bearings are fitted. In order to ensure function and reliability under all operating conditions, the bearings and housings are matched to each other.

 
 

Due to the spherical outside surface of the bearing outer ring and the concave housing bore, housing units can compensate for static angular misalignment of the shaft, see link.

 
 

The units are used predominantly as locating bearings, but are also suitable as non-locating bearings under low loads and speeds.

 
 

The housings are screw mounted on the adjacent construction. Less stringent tolerances are sufficient for the screw mounting surfaces, see link.

 
   

Housing units
with cast iron housing

 

Cast iron housings are single-piece units with high load carrying capacity, see link. For relubrication of radial insert ball bearings, the housing bore has a lubrication groove and the housing has a lubrication hole for conventional taper type lubrication nipples to DIN 71412. In the delivered condition, the hole in the housing is closed off by a plastic plug. Cast iron units are available as plummer block and flanged housing units.

 
   

Plummer block housing units

 

Plummer block housing units have a long or a short base, Figure 1. Housings with a long base are screw mounted to the adjacent construction by means of slots, housings with a short base by blind threaded holes.

 
   

Figure 1
Plummer block housing unit,
cast iron housing, with long base

PASE

 

imageref_61513611_All.gif

 
   

Flanged housing units

 

Flanged housing units are available as two-bolt, three-bolt and four-bolt units, Figure 2. The housings are oval, triangular, square or round in shape. The housings have through holes for location purposes. Some series also have a centring spigot. The centring spigot is mounted in a turned recess in the machine structure. This gives concentric alignment of the housings and relieves the fixing screws of any radial forces.

 
   

Figure 2
Flanged housing unit –
cast iron housing

PCJT

 

imageref_61515787_All.gif

 
   

Take-up housing units

 

Take-up housing units have facilities for sliding or swivel motion, Figure 3. They are used where shafts must undergo substantial displacement travel.

 
   

Figure 3
Take-up housing unit,
cast iron housing

PTUE

 

imageref_61517963_All.gif

 
   

Housing materials

 

The material used for the cast iron housings is cast iron EN-GJL-200/250 to DIN EN 1561. Housings are also available by agreement in spheroidal graphite cast iron EN-GJS-400/500 to DIN EN 1563.

 
   

Bearing end caps

 

In order to cover the exposed ends of rotating shafts, cast iron housings with the suffix N can be fitted with bearing end caps.

 
   

Corrosion-resistant units

 

Corrosion-resistant units are available as plummer block and flanged housing units. The housings and insert bearings are coated with Corrotect® and have the suffix FA125.

 
 

The units are used if moisture, contaminated water, salt spray mist, weakly alkaline or weakly acidic cleaning agents are present.

 
   

Units for high and low temperatures

 

These units are available as plummer block and flanged housing units. The housings correspond to the cast iron housings described above. The high temperature variant FA164 includes a tapered lubrication nipple to DIN 71412 screwed into the housing.

 
 

Units for high temperatures have the suffix FA164 and units for the extended temperature range have the suffix FA101, see table, and table.

 
   

Housing units
with sheet steel housing

 

Sheet steel housings are two-piece units made from pressed deep drawn sheet steel and in some cases have a Corrotect® coating. The series GRA and GRRY can be relubricated via a lubrication nipple. The units are available as plummer block and flanged housing units, Figure 4 and Figure 5.

 
 

Units with sheet steel housings are suitable for moderate loads and lightweight constructions.

 
   

Plummer block
and flanged housing units
with rubber interliner

 

In addition to the normal plummer block and flanged housing units, there is also a design with a rubber interliner on the bearing outer ring. This interliner absorbs shocks and vibrations and thus gives damping of running noises.

 
   

Figure 4
Plummer block housing unit,
sheet steel housing

PB

 

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Figure 5
Flanged housing unit,
sheet steel housing

GRA

 

imageref_61522315_All.gif

 
   

Corrosion-resistant units

 

The two-piece sheet steel flanged units have the suffix VA and are also available with a relubrication facility.

 
 

They are used if moisture, contaminated water, salt spray mist, weakly alkaline or weakly acidic cleaning agents are present.

 
   

Other products

 

In addition to the comprehensive catalogue range, we also supply housing units for special applications. Examples include:

 
 
  • corrosion-resistant flanged housing units with two-piece housings
    • a polypropylene flanged element combined with a corrosion-resistant alloy steel flanged element
  • units with plastic housings combined with radial insert ball bearings made from corrosion-resistant steel or with Corrotect®-coated bearings
  • other designs are available with special greases, seals and inch dimensions, see also TPI 127, Radial insert ball bearings/housing units in inch sizes. Please contact us as necessary.
 
   

Suffixes

 

Suffixes for the available housing unit designs: see table.

 
   
Table 1
Available designs
 

Suffix
Description
Design
2C
Radial insert ball bearing with flinger shields on both sides
Standard
FA101
High and low temperature design –40 °C to +180 °C
FA106
Bearing subjected to special noise testing
FA107
Bearing with lubrication holes on the locating side
FA125
With Corrotect® coating
FA164
High temperature design up to +250 °C
N
Cast iron housing with undercut slot for end caps
OSE
Bearing without clamping element
JIS
Housing dimensions according to JIS B 1559

 
   

 

 
   
  
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