INDUSTRY COMPONENT

T-slots

T-slots are standardized grooves in machine beds and dies for securing workpieces and accessories with T-bolts.

Component Specifications

Definition
T-slots are precisely machined grooves with a T-shaped cross-section that run along the length of machine tool beds, die plates, and worktables. They provide a modular clamping system where T-bolts can be inserted and slid to any position, then secured with nuts to hold workpieces, fixtures, or accessories firmly in place during machining, assembly, or testing operations.
Working Principle
T-slots function by providing a continuous channel that accepts T-bolts. The bolt head slides within the wider undercut portion of the slot, while the threaded shaft extends upward through the narrower opening. When a workpiece is positioned, a nut is tightened on the bolt, creating downward clamping force that secures the item against the machine surface. The slot design prevents bolt rotation and allows infinite positioning flexibility along the slot length.
Materials
Typically made from cast iron (gray iron grades 20-40), ductile iron, or steel (mild steel, alloy steel). Hardness ranges from 150-250 HB. Surface treatments may include induction hardening (50-55 HRC on wear surfaces) or corrosion-resistant coatings.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Tolerance±0.1mm on width, ±0.2mm on position
Slot Depth12-40mm depending on width
Slot Width8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 22mm, 28mm
Load Capacity5-50 kN per bolt depending on size
Pitch Distance50mm, 63mm, 80mm, 100mm, 125mm standard spacings

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 299:1987, DIN 650:1986, ANSI B5.18

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Chip accumulation causing inaccurate positioning
  • Over-tightening leading to slot deformation
  • Corrosion in humid environments
  • Wear from abrasive particles
FMEA Triads
Trigger: Chip accumulation in slots
Failure: Inaccurate workpiece positioning and reduced clamping force
Mitigation: Regular cleaning protocols and chip guards
Trigger: Excessive bolt torque
Failure: Slot deformation and cracking
Mitigation: Torque limiting tools and operator training
Trigger: Corrosive coolant exposure
Failure: Slot corrosion and bolt seizure
Mitigation: Corrosion-resistant materials and protective coatings

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Width tolerance: H7/h6 fit, Position tolerance: ±0.2mm over 300mm length
Test Method
Go/no-go gauges for slot dimensions, surface plate inspection for flatness, load testing with calibrated torque wrenches

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of T-slots

Manufacturer profiles associated with T-slots.

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What are the most common T-slot sizes?

The most common T-slot widths are 10mm, 12mm, 14mm, and 16mm for general machine tools, with 22mm and 28mm used for heavy-duty applications.

Can T-slots be added to existing machine beds?

Yes, through machining operations, but this requires precision equipment and may affect structural integrity. It's generally better to purchase machines with factory-machined T-slots.

How do I maintain T-slots?

Regular cleaning with brushes and compressed air, occasional lubrication of sliding surfaces, and inspection for burrs or damage. Avoid overtightening bolts to prevent slot deformation.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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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