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Installation Positioning and Lubrication Configuration for AXRY-NGS Bearings

Locating Pin Hole Function

For error-free positioning of the lubrication bore of the bearing to the lubrication hole in the machine housing, the AXRY-NGS bearings have a so-called locating pin hole (1) on the outer ring. This ensures precise alignment of the lubrication bore with the housing lubrication channel during assembly.

Locating Pin Hole Photo
Locating pin hole on the AXRY-NGS outer ring

Positioning Hole Arrangement

The relative positions of the positioning hole and the other holes are as follows:

Positioning Hole Arrangement Diagram
Position relationship of the positioning hole, fixing hole, and lubrication bore
Mark Description
1 Positioning hole (locating pin hole)
2 Lubrication bore
3 Fixing hole
4 Fastening screw

Position Relationships

  • The positioning hole (1) is offset from the fixing hole (3) by half a pitch division
  • The positioning hole (1) is offset from the lubrication bore (2) by one whole pitch division
  • The positioning hole diameter (dPB) in the bearing outer ring is designed slightly larger than the recommended locating pin diameter dST to ensure a proper fit

Note: The individual pitch divisions are documented in the product data sheets.

Locating Pin Dimension Specifications

The following are the locating pin specifications for each size series:

Symbol Legend
  • hmax: Maximum locating pin height (mm)
  • dST: Locating pin diameter (mm)
  • dPB min: Minimum positioning hole diameter (mm)
Bearing Model hmax [mm] dST [mm] dPB min [mm]
AXRY 120-460-NGS 4 4 5
AXRY 580-NGS 6 6 8
AXRY 650-NGS 8 8 10

Assembly Requirements

Important Safety Notice

Secure the positioning pins appropriately during assembly. The pins must be reliably prevented from dropping out in operation.

Assembly Steps

  1. Machine the corresponding positioning hole in the housing (diameter per the table above)
  2. Insert a locating pin of the appropriate size
  3. Mount the bearing aligned with the locating pin
  4. Confirm that the lubrication bore aligns with the housing lubrication channel
  5. Secure the bearing and ensure the locating pin cannot drop out

Lubrication Bore Alignment

Using the locating pin hole ensures:

  • Precise alignment of the bearing lubrication bore with the housing lubrication channel
  • A consistent angular position for every assembly
  • Correct repositioning when reinstalled after maintenance
  • Effective lubricant flow into the bearing working area

Housing Design Recommendation

The housing lubrication channel should be positioned as close as possible to the bearing's radial lubrication bore to ensure effective lubricant flow into the bearing.

Related Sections

ESC