SKF 61816-2RZ
61816-2RZ is a single row ultra-thin section deep groove ball bearing fitted with non-contact 2RZ seals on both sides, belonging to SKF 618 (80000) thin wall series deep groove ball bearings.
1. Product General Description
61816-2RZ is a single row ultra-thin section deep groove ball bearing fitted with non-contact 2RZ seals on both sides, belonging to SKF 618 (80000) thin wall series deep groove ball bearings.Single row deep groove ball bearings with non-contact seals feature versatile structure, ultra-low friction, optimized low noise & low vibration performance to support high rotational speeds. This bearing can accommodate radial loads and bidirectional axial loads simultaneously, easy to install and requires minimal maintenance. The dual-side integrated non-contact seals retain internal grease and block external dust, moisture and contaminants, greatly extending service life.
Suffix Explanation from SKF Official Definition
2RZ: Non-contact NBR rubber seals with steel reinforcement on both bearing sides; narrow clearance fit with inner ring shoulder, low friction loss, high speed compatibility, better contamination resistance than steel Z shields.
2. Core Dimension Parameters (SKF Official Metric Data)
| Parameter Item | Symbol | Value | Unit |
|---|---|---|---|
| Bore diameter | d | 80 | mm |
| Outside diameter | D | 100 | mm |
| Bearing width | B | 10 | mm |
| Minimum chamfer radius | r min | 0.6 | mm |
| Inner ring shoulder diameter (mounting limit) | d₁ | 86.6 | mm |
| Outer ring shoulder diameter (mounting limit) | D₁ | 95.5 | mm |
| Net weight | m | 0.15 | kg |
3. Load & Speed Performance Parameters (SKF Official Datasheet)
| Performance Item | Value | Unit |
|---|---|---|
| Basic dynamic load rating (C) | 12.7 | kN |
| Basic static load rating (C₀) | 11.2 | kN |
| Fatigue limit load (Pᵤ) | 0.64 | kN |
| Reference speed (grease lubricated) | 13 000 | r/min |
| Limiting speed (grease lubricated, sealed version) | 8 000 | r/min |
4. Structural & Technical Properties (SKF Official Standard Configuration)
Number of rolling rows: Single row
Raceway structure: Conrad type, no filling slots
Bore type: Cylindrical bore
Cage: Pressed sheet steel cage
Radial internal clearance: CN (Normal clearance, standard)
Tolerance class: P0 / ABEC 1 (Normal precision grade)
Sealing configuration: Dual-side non-contact RZ seals
Seal material: NBR nitrile rubber with steel reinforcing insert
Rolling element & ring material: Standard bearing steel
Surface coating: Uncoated
Pre-lubrication: Factory filled with standard SKF grease
Relubrication feature: No relubrication groove/hole
Outer ring locating feature: No flange, no locating groove
Operating temperature range: -20 ℃ ~ +120 ℃
5. Key Advantages (SKF Official Product Features)
Ultra-thin wall design, saves installation space for compact equipment
Non-contact 2RZ seals realize low friction and high-speed operation
Dual-side sealing construction avoids frequent re-lubrication
Low noise, low vibration, stable running performance
Capable of bearing combined radial + bidirectional axial loads
Simple mounting structure, wide general industrial adaptability
6. Typical Application Scenarios
Precision small motors, textile machinery, office automation equipment, precision instrumentation, small conveyor rollers, miniature gear units, thin-section rotary components and other compact space-limited transmission devices.
