INDUSTRY COMPONENT

Cylinder Bore

Precision-machined cylindrical bore in pneumatic cylinder bodies that guides piston movement and contains compressed air.

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Component Specifications

Definition
The cylinder bore is the internal cylindrical surface of a pneumatic cylinder body, precisely machined to specific dimensional tolerances and surface finish requirements. It serves as the guiding channel for the piston assembly, providing a sealed environment for compressed air to act upon the piston. The bore's geometry, surface characteristics, and dimensional accuracy directly impact cylinder efficiency, sealing performance, and operational lifespan.
Working Principle
Provides a smooth, sealed cylindrical pathway for piston reciprocation, converting pneumatic pressure into linear mechanical motion through controlled air expansion/compression within the bore volume.
Materials
Typically machined from aluminum alloys (6061-T6, 7075-T6), stainless steel (304, 316), or hardened steel, with optional surface treatments (hard anodizing, chrome plating, nitriding) for wear resistance.
Technical Parameters
  • Hardness Varies by material (e.g., 60-70 HRC for hardened steel)
  • Roundness ≤0.01 mm
  • Tolerance H7-H9 (ISO)
  • Straightness ≤0.02 mm/m
  • Bore Diameter 10-200 mm (standard range)
  • Surface Finish Ra 0.4-1.6 μm
Standards
ISO 6432, ISO 15552, DIN ISO 3320, DIN 24334

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Cylinder Bore.

pneumatic cylinder bore cylinder bore machining bore diameter tolerance cylinder surface finish ISO cylinder standards pneumatic component specifications Cylinder Bore Cylinder Bore in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Cylinder Body (Pneumatic)

The main structural housing of a pneumatic cylinder that contains the piston and compressed air.

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Hydraulic Cylinder Body

The main structural housing of a hydraulic cylinder that contains the piston and hydraulic fluid.

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Cylinder block

The main structural component of an internal combustion engine that houses the cylinders and provides mounting points for other engine components.

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Engineering Analysis

Risks & Mitigation
  • Bore wear leading to air leakage
  • Corrosion in humid environments
  • Contamination scoring bore surface
  • Dimensional inaccuracy causing binding
FMEA Triads
Trigger: Abrasive contamination in compressed air
Failure: Progressive bore scoring and increased friction
Mitigation: Install proper filtration (5 μm or finer), regular maintenance
Trigger: Inadequate lubrication
Failure: Accelerated wear of bore and seals
Mitigation: Use lubricated air or self-lubricating materials, monitor lubrication systems
Trigger: Misalignment during installation
Failure: Uneven wear and premature seal failure
Mitigation: Proper mounting alignment, use of flexible couplings, alignment verification

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
ISO 2768-mK for general dimensions, specific bore tolerances per ISO 6432/15552
Test Method
Air leakage test per ISO 19973, dimensional verification with bore gauges/CMM, surface roughness measurement with profilometer

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What surface finish is required for optimal cylinder bore performance?

Ra 0.4-1.6 μm is typical; smoother finishes reduce friction and wear, while rougher finishes may retain lubrication better but increase seal wear.

How does bore tolerance affect pneumatic cylinder efficiency?

Tighter tolerances (H7) minimize air leakage past seals, improving efficiency and response time, but increase manufacturing cost.

Can cylinder bores be repaired if worn or damaged?

Limited repair via honing or re-sleeving is possible, but excessive wear typically requires cylinder replacement for proper sealing.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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