Overview
ISO 113:2010 - "Rolling bearings - Plummer block housings - Boundary dimensions" specifies standard boundary dimensions for plummer block housings used with rolling bearings. This third edition (2010) defines dimensional limits and nominal sizes for two-bolt and four-bolt plummer block housings intended for bearing diameter series referenced in ISO 15. The standard ensures dimensional interchangeability of bearing housings across manufacturers and applications.
Key topics and requirements
- Scope: Boundary dimensions for two-bolt housings (diameter series 0–3) and four-bolt housings (diameter series 0–2).
- Normative references: Cites ISO 15 (bearing diameter series), ISO 5593 (vocabulary) and ISO 15241 (symbols).
- Defined terms: Clear definitions for two-bolt plummer block housing and four-bolt plummer block housing.
- Symbols and figures: Standardized symbols (e.g., A, D, H, J, N, L, a) and illustrative Figures 1 and 2 show seating diameter, base dimensions, bolt-hole centres, and other critical features.
- Boundary dimension tables: Tables 1 and 2 list nominal, minimum and maximum boundary dimensions (in millimetres) for specified bearing diameters. The standard explains when a value marked “max.” or “min.” represents both the nominal and the limiting actual value.
- Annex A (informative): Provides additional commonly used boundary dimensions beyond the main tables.
- Traceability: Bibliography references ISO 8062-3 for casting and machining tolerances related to housings.
Applications
ISO 113:2010 is practical for:
- Mechanical designers and machine builders specifying bearing housings for shafts and rotating equipment.
- Bearing and housing manufacturers implementing standard mounting dimensions for cast or machined plummer blocks.
- Maintenance and reliability engineers selecting compatible replacement housings and spare parts.
- Procurement and quality teams ensuring interchangeability across suppliers and adherence to international dimensioning practices.
Typical uses include power transmission systems, industrial gearboxes, conveyors, pumps and other rotating machinery that use rolled bearings in standard plummer block housings.
Related standards
- ISO 15 - Rolling bearings - Radial bearings - Boundary dimensions, general plan
- ISO 5593 - Rolling bearings - Vocabulary
- ISO 15241 - Rolling bearings - Symbols for quantities
- ISO 8062-3 - GPS tolerances for castings (referenced for machining allowances)
ISO 113:2010 helps ensure consistent, interoperable plummer block housing design by standardizing boundary dimensions for reliable bearing installation and replacement. Keywords: ISO 113:2010, plummer block housings, rolling bearings, boundary dimensions, two-bolt, four-bolt, bearing housing dimensions.
