---
title: "Roller Assembly"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ROLLER_ASSEMBLY"
  data_integrity_hash: "557019a0ededcf3bf917d4dc7637a09d"
  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:ROLLER_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/roller-assembly.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/roller-assembly"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.5 m/s linear velocity, 50-2000 N radial load per roller, -20°C to 80°C ambient temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 10
    unit: "life"
    consequence: "Hertzian contact stress exceeding 1.8 GPa causing subsurface fatigue spalling in bearings, shaft bending moment surpassing yield strength of 345 MPa (AISI 1045 steel), thermal expansion differential between steel (11.7 μm/m·K) and polymer seals causing seal extrusion"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Contaminant ingress (ISO 4406:2017 Class 21/19/16) into bearing lubrication"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "IP67-rated labyrinth seals with 0.3 mm radial clearance, automated grease injection at 100-hour intervals"
  - node_2:
      trigger: "Shaft misalignment exceeding 0.05 mm/mm angular tolerance"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Self-aligning spherical roller bearings with ±3° angular compensation, laser-aligned mounting fixtures with 0.01 mm positioning accuracy"
bom_nodes:
  roller:
    type: "component"
    urn: "URN:CNFX:ME:ROLLER"
    interface_type: "physical-logic-coupled"
  bearing:
    type: "component"
    urn: "URN:CNFX:ME:BEARING"
    interface_type: "physical-logic-coupled"
  shaft:
    type: "component"
    urn: "URN:CNFX:ME:SHAFT"
    interface_type: "physical-logic-coupled"
  mounting-bracket:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_BRACKET"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 286-1:2010 (GEOMETRICAL PRODUCT SPECIFICATIONS - LIMITS AND FITS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ABMA 9:1990 (LOAD RATINGS AND FATIGUE LIFE FOR BALL BEARINGS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 5412-1:2016 (ROLLER BEARINGS - CYLINDRICAL ROLLER BEARINGS, SINGLE ROW, WITH CAGE)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/roller-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "4548508324accfa19f8005ea65d600fefff927e34d4407b1a48604e8099172ac"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Roller Assembly

## 1. Technical Definition
A modular unit consisting of rollers, bearings, shafts, and mounting hardware that facilitates the movement of pallets along a conveyor system.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.5 m/s linear velocity, 50-2000 N radial load per roller, -20°C to 80°C ambient temperature**. Failure boundary: **Bearing L10 life exhaustion at 90 million revolutions, shaft deflection exceeding 0.1 mm/m length, roller surface temperature surpassing 120°C**, Mechanism: **Hertzian contact stress exceeding 1.8 GPa causing subsurface fatigue spalling in bearings, shaft bending moment surpassing yield strength of 345 MPa (AISI 1045 steel), thermal expansion differential between steel (11.7 μm/m·K) and polymer seals causing seal extrusion**.

### 2.1 Analytical Physics Model
Governed by the **Tractive Power & Resistance Model**:

> **Primary Equation**: $P = \frac{F \cdot v}{\eta}$  
> **Engineering Impact**: Ensures motor torque capacity exceeds operational inertia.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| F | Total Tractive Resistance | Engineering Constant |
| v | Belt Speed | Engineering Constant |
| \eta | Efficiency | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Contaminant ingress (ISO 4406:2017 Class 21/19/16) into bearing lubrication | 8 | Abrasive wear increasing bearing clearance beyond 0.05 mm, generating 85 dB(A) vibration at 2× rotational frequency | IP67-rated labyrinth seals with 0.3 mm radial clearance, automated grease injection at 100-hour intervals |
| Shaft misalignment exceeding 0.05 mm/mm angular tolerance | 8 | Bearing edge loading creating 2.4 GPa localized contact stress, premature L10 life reduction to 15% of design | Self-aligning spherical roller bearings with ±3° angular compensation, laser-aligned mounting fixtures with 0.01 mm positioning accuracy |

## 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**: **Conveyor Drive Motor**, **Pallet Position Sensor**, **Lubrication System**  
**Downstream Applications**: Automated Assembly Line, Warehouse Sorting System, Packaging Line  

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

### Q: What materials are available for the roller assembly components?
**A**: Our roller assemblies are available in carbon steel for standard applications, stainless steel for corrosive environments, and polyurethane rollers for noise reduction and gentle handling.

### Q: How does the modular design benefit conveyor system maintenance?
**A**: The modular design allows individual components like bearings, shafts, or rollers to be replaced without dismantling the entire conveyor system, reducing downtime and maintenance costs.

### Q: What types of bearings are used in these roller assemblies?
**A**: We use precision industrial bearings suitable for heavy-duty applications, ensuring smooth rotation, high load capacity, and extended service life in demanding manufacturing environments.

## 6. Manufacturing Compliance
- ISO 286-1:2010 (GEOMETRICAL PRODUCT SPECIFICATIONS - LIMITS AND FITS)
- ANSI/ABMA 9:1990 (LOAD RATINGS AND FATIGUE LIFE FOR BALL BEARINGS)
- DIN 5412-1:2016 (ROLLER BEARINGS - CYLINDRICAL ROLLER BEARINGS, SINGLE ROW, WITH CAGE)

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

### 🌐 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**: ROLLER_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: a0f6421d
