INDUSTRY COMPONENT

T-slots

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

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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
  • tolerance ±0.1mm on width, ±0.2mm on position
  • slot_depth 12-40mm depending on width
  • slot_width 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 22mm, 28mm
  • load_capacity 5-50 kN per bolt depending on size
  • pitch_distance 50mm, 63mm, 80mm, 100mm, 125mm standard spacings
Standards
ISO 299:1987, DIN 650:1986, ANSI B5.18

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for T-slots.

T-slot machine bed slots workholding system T-bolt grooves die plate slots modular clamping machine tool accessories industrial fixtures T-slots T-slots in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Bed / Die

The stationary lower component of a hydraulic press brake that supports the die and provides a stable foundation for bending operations.

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Bed / Die Holder

The stationary base component of a CNC press brake that supports and secures the lower die during metal bending operations.

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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

Interchangeable Parts

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

Buyer Feedback

★★★★☆ 4.6 / 5.0 (31 reviews)

"Found 33+ suppliers for T-slots on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this T-slots is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the T-slots so far."

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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.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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