ISO 6195-2021 PDF

Full title and description

Fluid power systems and components — Cylinder-rod wiper-ring housings in reciprocating applications — Dimensions and tolerances. This International Standard specifies the dimensional definitions and tolerances for housings that accept wiper (rod-wiper) rings used on reciprocating cylinder rods, covering a broad range of nominal rod diameters used in hydraulic and pneumatic cylinder manufacture.

Abstract

This standard defines the dimensions and tolerances of housings for wiper-rings used in reciprocating rod applications for fluid power cylinders. It provides the nominal sizes and tolerancing rules needed by designers and manufacturers to ensure proper fit and interchangeability of wiper-ring housings for rods within the covered diameter range.

General information

• Status: Published
• Publication date: June 2021
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 23.100.20 (Cylinders)
• Edition / version: Edition 4 (2021)
• Number of pages: 16

(General information and bibliographic details as recorded in the official ISO record.)

Scope

Specifies dimensions and tolerances of housings for wiper-rings used in reciprocating rod applications for fluid power cylinders. The standard covers the nominal rod diameter range specified by the document and provides the geometric parameters required for compatible housing design. It is intended to support interchangeability and consistent manufacture of wiper-ring housings for hydraulic and pneumatic cylinders.

Key topics and requirements

• Dimension tables for housing bore and groove geometry to accommodate standard wiper/rod-wiper rings.
• Tolerance classes and limits for housing diameters, depths and seating features to ensure correct fit and retention of wipers.
• Nominal rod diameter range and corresponding housing sizes for common cylinder applications.
• Guidance on housing form types and basic interface features used with elastomeric and reinforced wiper rings (recessed housings, open recessed housings, undercut features, etc.).
• Requirements oriented to ensuring interchangeability between manufacturers and ease of assembly/inspection.

Typical use and users

Used by hydraulic and pneumatic cylinder designers, mechanical engineers, seal and wiper manufacturers, quality and production engineers, procurement teams sourcing standard parts, and test/validation laboratories. The standard is referenced when specifying housing dimensions for new cylinder designs, checking supplier parts for conformity, and updating component drawings to align with international practice.

Related standards

This document is maintained within ISO/TC 131 (Fluid power systems) and replaces earlier editions of ISO 6195 (for example ISO 6195:2013 and prior). Designers and specifiers commonly cross‑reference related fluid power and sealing standards such as the fluid power vocabulary and O‑ring dimensional standards (for broader sealing/interface context).

Keywords

wiper-ring, rod wiper, cylinder-rod, wiper housing, fluid power, hydraulic cylinder, pneumatic cylinder, dimensions, tolerances, ISO 6195, seal housing

FAQ

Q: What is this standard?

A: ISO 6195:2021 is an International Standard that specifies the dimensions and tolerances for housings that accept wiper (rod-wiper) rings on reciprocating cylinder rods used in fluid power systems.

Q: What does it cover?

A: It covers the nominal housing geometry and tolerancing required to accept standard wiper rings for reciprocating rod applications, enabling interchangeability and consistent manufacture across hydraulic and pneumatic cylinder designs.

Q: Who typically uses it?

A: Mechanical and design engineers for cylinders, seal and wiper manufacturers, production and quality engineers, procurement/specification professionals, and test laboratories involved with fluid power components.

Q: Is it current or superseded?

A: ISO 6195:2021 is the current published edition (2021) and supersedes earlier editions including ISO 6195:2013.

Q: Is it part of a series?

A: It is part of the body of ISO standards maintained by ISO/TC 131 on fluid power systems and is often used in conjunction with other sealing and fluid-power standards (for example those that define vocabulary and O‑ring dimensions) to provide a complete sealing/interface specification framework.

Q: What are the key keywords?

A: Wiper-ring, rod-wiper, cylinder-rod housing, dimensions, tolerances, fluid power, hydraulic, pneumatic, ISO 6195.