---
title: "Tailstock"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:TAILSTOCK"
  data_integrity_hash: "0479b58cf12f1998f91a1aa19df701d8"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:TAILSTOCK"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/tailstock.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/tailstock"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.0 kN axial force, 0-150 mm travel range, 0.01 mm positioning accuracy"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 2.5
    unit: "kN"
    consequence: "Plastic deformation of quill material (typically 4140 steel) beyond yield strength of 415 MPa, Hertzian contact stress exceeding 1.2 GPa in tapered roller bearings causing brinelling"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Insufficient lubrication flow rate below 0.1 L/min"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate flow sensor with 0.05 L/min resolution and automatic shutdown at 0.08 L/min"
  - node_2:
      trigger: "Misalignment exceeding 0.02 mm/mm between tailstock and headstock axes"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Laser alignment system with 0.001 mm resolution and automatic compensation via servo adjustment"
bom_nodes:
  base:
    type: "component"
    urn: "URN:CNFX:ME:BASE"
    interface_type: "physical-logic-coupled"
  quill:
    type: "component"
    urn: "URN:CNFX:ME:QUILL"
    interface_type: "physical-logic-coupled"
  center:
    type: "component"
    urn: "URN:CNFX:ME:CENTER"
    interface_type: "physical-logic-coupled"
  handwheel:
    type: "component"
    urn: "URN:CNFX:ME:HANDWHEEL"
    interface_type: "physical-logic-coupled"
  locking-lever:
    type: "component"
    urn: "URN:CNFX:ME:LOCKING_LEVER"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 230-1:2012 (TEST CODE FOR MACHINE TOOLS - GEOMETRIC ACCURACY OF MACHINES OPERATING UNDER NO-LOAD OR QUASI-STATIC CONDITIONS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI B5.9-1979 (SPINDLE NOSES AND TOOL SHANKS FOR MACHINE TOOLS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/tailstock.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "79896bee35e38916e65c83a4adcf8749a77660dc71d8b164bf7e05b02f027f68"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Tailstock

## 1. Technical Definition
A movable support component on a CNC lathe that provides axial support to long workpieces during machining operations.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.0 kN axial force, 0-150 mm travel range, 0.01 mm positioning accuracy**. Failure boundary: **Axial force exceeding 2.5 kN causes permanent deformation of quill assembly, quill extension beyond 155 mm leads to bearing seizure**, Mechanism: **Plastic deformation of quill material (typically 4140 steel) beyond yield strength of 415 MPa, Hertzian contact stress exceeding 1.2 GPa in tapered roller bearings causing brinelling**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Insufficient lubrication flow rate below 0.1 L/min | 8 | Tapered roller bearing seizure at 120°C operating temperature | Integrate flow sensor with 0.05 L/min resolution and automatic shutdown at 0.08 L/min |
| Misalignment exceeding 0.02 mm/mm between tailstock and headstock axes | 8 | Workpiece deflection causing 0.05 mm diameter variation over 300 mm length | Laser alignment system with 0.001 mm resolution and automatic compensation via servo adjustment |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **CNC Lathe**, **Coolant System**, **Workpiece Loading System**  
**Downstream Applications**: Shafts, Pins, Spindles  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are used in manufacturing this tailstock?
**A**: This tailstock is constructed from high-quality cast iron for the base and alloy steel for critical components like the center and quill, ensuring durability and precision in machinery manufacturing applications.

### Q: How does the tailstock provide support during CNC lathe operations?
**A**: The tailstock moves along the lathe bed to provide axial support to long workpieces, preventing deflection during machining. The quill extends to contact the workpiece, while the locking lever secures the position for stable operations.

### Q: What are the main components included in the tailstock BOM?
**A**: The bill of materials includes the base, center, handwheel, locking lever, and quill. These components work together to ensure precise positioning and secure support for workpieces in CNC machining.

## 6. Manufacturing Compliance
- ISO 230-1:2012 (TEST CODE FOR MACHINE TOOLS - GEOMETRIC ACCURACY OF MACHINES OPERATING UNDER NO-LOAD OR QUASI-STATIC CONDITIONS)
- ANSI B5.9-1979 (SPINDLE NOSES AND TOOL SHANKS FOR MACHINE TOOLS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Tailstock](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/tailstock)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **5** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: TAILSTOCK | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: fdff2861
