INDUSTRY COMPONENT

Mounting Holes / Tapped Threads

Precision mounting holes with tapped threads for securing linear guide bearing housings to machine structures.

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Component Specifications

Definition
Mounting holes with internal tapped threads are precision-machined features on linear guide bearing housings designed to provide secure attachment points to machine frames, bases, or other structural components. These threaded holes ensure proper alignment, load distribution, and vibration resistance for linear motion systems.
Working Principle
Threaded holes create mechanical fastening points through friction and axial clamping force when bolts are tightened, transferring loads from the bearing housing to the machine structure while maintaining precise alignment of the linear guide system.
Materials
Typically matching the housing material: cast iron (GGG40/50), aluminum alloys (AlSi10Mg, 6061-T6), or steel (S45C, SS400). Thread inserts may be steel (SCM435) or stainless steel (SUS304) for wear resistance.
Technical Parameters
  • Thread Type Metric (M), Unified (UNC/UNF)
  • Common Sizes M4, M5, M6, M8, M10, 1/4-20, 5/16-18
  • Thread Class 6H for metric, 2B for unified
  • Thread Depth 1.5D to 2D (where D is thread diameter)
  • Hole Tolerance H7 for through holes, H13 for blind holes
  • Surface Finish Ra 3.2 μm or better
Standards
ISO 965, DIN 13, ISO 4762, DIN 912

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Mounting Holes / Tapped Threads.

tapped mounting holes linear guide installation bearing housing threads machine mounting threaded fastening precision alignment industrial mounting solutions Mounting Holes / Tapped Threads Mounting Holes / Tapped Threads in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Linear Guide / Bearing Housing

A structural component that houses and supports linear bearings or guide rails, providing precise linear motion guidance within mechanical systems.

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Engineering Analysis

Risks & Mitigation
  • Thread stripping under excessive torque
  • Misalignment causing binding
  • Corrosion in threaded areas
  • Fatigue failure from vibration
  • Improper load distribution
FMEA Triads
Trigger: Insufficient thread engagement depth
Failure: Thread stripping under load
Mitigation: Design holes with minimum 1.5D thread depth and verify with depth gauge during inspection
Trigger: Cross-threading during installation
Failure: Damaged threads requiring repair
Mitigation: Implement operator training, use guide fixtures, and specify self-aligning washers
Trigger: Vibration loosening
Failure: Bolts backing out, causing misalignment
Mitigation: Use thread-locking compounds, lock washers, or prevailing torque nuts

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Position tolerance ±0.1mm, perpendicularity 0.05mm/100mm, thread pitch diameter within ISO 965 limits
Test Method
Go/no-go thread gauges, coordinate measuring machines (CMM) for position verification, torque testing for pull-out strength

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 is the recommended torque for mounting bolts in these threaded holes?

Torque values depend on bolt size, material, and thread engagement. For M6 steel bolts in cast iron: 8-10 Nm; for M8: 18-22 Nm. Always follow manufacturer specifications and use calibrated torque wrenches.

How do I prevent thread damage during installation?

Use proper thread engagement (1.5D minimum), clean threads before assembly, apply appropriate lubricant, avoid cross-threading by starting bolts straight, and use thread inserts in soft materials like aluminum.

Can damaged threads be repaired without replacing the housing?

Yes, using helicoil inserts or threaded inserts can restore damaged threads. For critical applications, consult the manufacturer for approved repair procedures to maintain load capacity.

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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