ISO 6103:2014 PDF

Bonded abrasive products — Permissible unbalances of grinding wheels as delivered — Static testing

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Title (English):

ISO 6103:2014

Bonded abrasive products — Permissible unbalances of grinding wheels as delivered — Static testing

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 7
Publication date:: September 30, 2014
Edition:: ISO IS 6103 edition 4 version 1
ICS:: 25.100.70

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Description (English):

ISO 6103:2014 specifies the maximum permissible values of unbalances for bonded abrasive wheels with an outside diameter D ≥ 125 mm and maximum operating speed vs ≥ 16 m/s, in the as-delivered condition. It also specifies the method for measuring the unbalance and the practical method for testing whether a grinding wheel is acceptable or not. It is applicable to bonded abrasive wheels in the as-delivered condition. It is not applicable to diamond, cubic boron nitride or natural stone grinding wheels, or to centreless control wheels, lapping and disc wheels, ball wheels or glass grinding wheels.

Technical details

Technical committee: ISO/TC 29/SC 5 - Grinding wheels and abrasives
SKU: ISO 6103:2014

Abstract

Overview - ISO 6103:2014 (Bonded abrasive products, static testing)

ISO 6103:2014 specifies maximum permissible unbalances for bonded abrasive grinding wheels (outside diameter D ≥ 125 mm and maximum operating speed vs ≥ 16 m/s) in the as‑delivered condition. It defines how to measure intrinsic unbalance by static testing and gives a practical acceptance test to decide whether a grinding wheel meets the permissible unbalance limits. The standard explicitly excludes diamond, CBN and natural stone wheels, and certain speciality wheels (centreless control, lapping, disc, ball and glass grinding wheels).

Key topics and technical requirements

Scope and applicability: Focus on bonded abrasive products (grinding wheels) as delivered; applies when D ≥ 125 mm and vs ≥ 16 m/s.
Definitions: Clear terms for unbalance, intrinsic unbalance and measured unbalance (products of mass and radius, expressed in g·mm).
Permissible unbalance: Maximum allowable unbalance is determined from the wheel mass, radius and a coefficient k (k values provided in Table 1 of the standard) that depends on wheel type, machine and operating speed.
Static measurement method: Use a balancing arbor and low‑friction supports (bevelled guide bars or overlapping steel discs) so the wheel can find equilibrium. Mark the top peripheral point, rotate 90°, then determine the mass to be affixed at the periphery that restores equilibrium. The measured unbalance is the affixed mass times the radius.
Acceptance test: Place the prescribed test mass (derived from permissible unbalance) on the marked rim-if the wheel remains stationary or comes to rest with the mark at the bottom, it passes; otherwise it is rejected.
Practical considerations: Limits on arbor/bore clearance, surface hardness of supports and assumption that flanges/arbor are balanced and geometrically sound.

Applications and users

Who uses ISO 6103:2014:

Grinding wheel manufacturers - for quality control of as‑delivered wheels.
Machine tool builders and maintenance teams - to assess wheel suitability and minimize vibration, bearing wear and arbor stresses.
Safety and inspection personnel - to verify wheels before mounting.
Grinding shop operators and procurement specialists - to specify acceptable unbalance in purchase and safety procedures.

Abstract

Overview - ISO 6103:2014 (Bonded abrasive products, static testing)

Key topics and technical requirements

Scope and applicability: Focus on bonded abrasive products (grinding wheels) as delivered; applies when D ≥ 125 mm and vs ≥ 16 m/s.
Definitions: Clear terms for unbalance, intrinsic unbalance and measured unbalance (products of mass and radius, expressed in g·mm).
Permissible unbalance: Maximum allowable unbalance is determined from the wheel mass, radius and a coefficient k (k values provided in Table 1 of the standard) that depends on wheel type, machine and operating speed.
Static measurement method: Use a balancing arbor and low‑friction supports (bevelled guide bars or overlapping steel discs) so the wheel can find equilibrium. Mark the top peripheral point, rotate 90°, then determine the mass to be affixed at the periphery that restores equilibrium. The measured unbalance is the affixed mass times the radius.
Acceptance test: Place the prescribed test mass (derived from permissible unbalance) on the marked rim-if the wheel remains stationary or comes to rest with the mark at the bottom, it passes; otherwise it is rejected.
Practical considerations: Limits on arbor/bore clearance, surface hardness of supports and assumption that flanges/arbor are balanced and geometrically sound.

Applications and users

Who uses ISO 6103:2014:

Grinding wheel manufacturers - for quality control of as‑delivered wheels.
Machine tool builders and maintenance teams - to assess wheel suitability and minimize vibration, bearing wear and arbor stresses.
Safety and inspection personnel - to verify wheels before mounting.
Grinding shop operators and procurement specialists - to specify acceptable unbalance in purchase and safety procedures.

ISO 6103:2014 PDF

Technical details

Abstract

Overview - ISO 6103:2014 (Bonded abrasive products, static testing)

Key topics and technical requirements

Applications and users

Abstract

Overview - ISO 6103:2014 (Bonded abrasive products, static testing)

Key topics and technical requirements

Applications and users

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