---
title: "Clamping Unit"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:CLAMPING_UNIT"
  data_integrity_hash: "cfeb97a0aa08eeffb9627188f48afd69"
  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:CLAMPING_UNIT"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/clamping-unit.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/clamping-unit"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "150-350 bar clamping force, 0.1-0.3 mm parallelism tolerance, 20-80°C operating temperature"
    unit: "kN"
engineering_limits:
  max_safe_operating_point:
    value: 120
    unit: "bar"
    consequence: "Plastic deformation of tie bars due to cyclic loading exceeding yield strength (typically 450 MPa for 4140 steel), thermal expansion mismatch between components exceeding 0.15% strain"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Hydraulic fluid contamination exceeding ISO 4406 18/16/13 cleanliness level"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install dual 3-micron absolute filtration with pressure differential monitoring"
  - node_2:
      trigger: "Tie bar preload loss exceeding 15% of initial 200 kN tension"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement ultrasonic bolt tension monitoring with 2% accuracy and automatic retensioning system"
bom_nodes:
  stationary-platen:
    type: "component"
    urn: "URN:CNFX:ME:STATIONARY_PLATEN"
    interface_type: "physical-logic-coupled"
  moving-platen:
    type: "component"
    urn: "URN:CNFX:ME:MOVING_PLATEN"
    interface_type: "physical-logic-coupled"
  tie-bars:
    type: "component"
    urn: "URN:CNFX:ME:TIE_BARS"
    interface_type: "physical-logic-coupled"
  clamping-cylinder-or-toggle-mechanism:
    type: "part"
    urn: "URN:CNFX:ME:CLAMPING_CYLINDER_OR_TOGGLE_MECHANISM"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 12164-1:2001 (TOOL HOLDERS FOR AUTOMATIC TOOL CHANGERS - PART 1: SHANKS AND RETENTION KNOBS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI B5.50-1994 (SPECIFICATION FOR TAPER AND FACE CONTACT TOOL SHANKS AND RETENTION KNOBS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 69893-1:2002 (TOOL HOLDERS FOR AUTOMATIC TOOL CHANGERS - PART 1: SHANKS AND RETENTION KNOBS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/clamping-unit.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "89855f877cccb72dbcacab8d4364ab650eaed38643f0cd158d90c5715463b3c1"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Clamping Unit

## 1. Technical Definition
A mechanical assembly in silicone molding machines that securely closes and holds the mold halves together under high pressure during the injection and curing phases.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **150-350 bar clamping force, 0.1-0.3 mm parallelism tolerance, 20-80°C operating temperature**. Failure boundary: **Clamping force drops below 120 bar, parallelism deviation exceeds 0.5 mm, temperature exceeds 100°C**, Mechanism: **Plastic deformation of tie bars due to cyclic loading exceeding yield strength (typically 450 MPa for 4140 steel), thermal expansion mismatch between components exceeding 0.15% strain**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Hydraulic fluid contamination exceeding ISO 4406 18/16/13 cleanliness level | 8 | Servo valve spool sticking causing uneven clamping pressure distribution | Install dual 3-micron absolute filtration with pressure differential monitoring |
| Tie bar preload loss exceeding 15% of initial 200 kN tension | 8 | Mold flash formation due to insufficient clamping force during injection peak pressure | Implement ultrasonic bolt tension monitoring with 2% accuracy and automatic retensioning system |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Clamping Cylinder (or Toggle Mechanism)](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/clamping-cylinder-or-toggle-mechanism.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Silicone Injection Unit**, **Industrial Chiller**, **Mold Temperature Controller**  
**Downstream Applications**: Silicone Seals and Gaskets, Medical Device Components, Automotive Silicone Parts  

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

### Q: What is the primary function of a clamping unit in silicone molding machines?
**A**: The clamping unit securely closes and holds the mold halves together under high pressure during the injection and curing phases, ensuring precise molding and preventing material leakage.

### Q: Why is alloy steel used in clamping unit construction?
**A**: Alloy steel provides exceptional strength, durability, and resistance to deformation under the extreme pressures and repetitive cycles typical in silicone molding operations.

### Q: What are the key components of a standard clamping unit?
**A**: A standard clamping unit consists of a clamping cylinder (or toggle mechanism), moving platen, stationary platen, and tie bars, all working together to apply and maintain clamping force.

## 6. Manufacturing Compliance
- ISO 12164-1:2001 (TOOL HOLDERS FOR AUTOMATIC TOOL CHANGERS - PART 1: SHANKS AND RETENTION KNOBS)
- ANSI B5.50-1994 (SPECIFICATION FOR TAPER AND FACE CONTACT TOOL SHANKS AND RETENTION KNOBS)
- DIN 69893-1:2002 (TOOL HOLDERS FOR AUTOMATIC TOOL CHANGERS - PART 1: SHANKS AND RETENTION KNOBS)

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

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: CLAMPING_UNIT | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 56fc2d53
