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NSK-RHP Four-Bolt Flange Bearing Unit, 20 mm ID, Cast Iron, 4 Mount Holes, Taper Bore SF20 R
Specifications
| Country of Origin | India |
|---|---|
| Brand | NSK-RHP |
| Material | Cast Iron |
| Length | 85.7mm |
| Model | SF20 R |
| Depth | 27.8mm |
| Width | 85.7mm |
| Inside Diameter | 20mm |
| Bore Type | Taper |
| Seals | Nitrile/fabric |
| Standards/Approvals | ISO |
| Mount Hole Size | 10 mm |
| Mount Hole Centre-to-Centre | 63.5mm |
| Number of Mount Holes | 4 |
| SKF 4 Hole, FY 20 TF 20 mm IDBrand | SKF |
| RS PRO 4 Hole Flange, UCF204 20 mm IDBrand | RS PRO |
Key Features
- Features a 20 mm inside diameter for precise shaft fitment.
- Engineered from robust cast iron for high durability and long service life.
- Includes four mounting holes for secure and stable installation.
- Uses a taper bore type for safe and efficient bearing seating.
- Built-in nitrile/fabric seals help retain lubrication and keep out contaminants.
- C3 internal radial clearance ensures performance in demanding applications.
- Supplied with grease nipples and full fitting instructions for easy maintenance.
- Complies with ISO standards and manufactured to BS1452 cast iron grade.
Product Description
The NSK-RHP SF20 R is a four-bolt flange bearing unit featuring a 20 mm inside diameter, designed for supporting rotary shafts in industrial mechanical assemblies. This bearing unit utilizes a taper bore configuration, offering simplified replacement and easy installation in a variety of equipment types.
Constructed from heavy-duty cast iron to BS1452 standards, the SF20 R ensures high structural integrity. The four mounting holes (each with a 10 mm diameter, spaced 63.5 mm centre-to-centre) allow for stable, vibration-resistant attachment in machinery frames and mounting plates. Built-in nitrile/fabric seals help contain lubricant and protect against dust, moisture, and other environmental contaminants, maximising service intervals and bearing life.
The robust spherical bearing insert is engineered to accommodate initial shaft misalignment, supporting efficient operation even if mounting is not perfectly aligned. The C3 internal radial clearance suits applications where thermal expansion or vibration might be present. The unit is supplied with grease nipples and comprehensive fitting instructions for straightforward routine maintenance.
Typical industrial applications include use in conveyor systems, agricultural equipment, processing machinery, HVAC fans and blowers, and automation assemblies - anywhere reliable, self-lubricating shaft support is required. Its compact depth (27.8 mm) and 85.7 mm square mounting face enable installation in both space-constrained and open environments.
Key technical details: cast iron construction for durability and corrosion resistance, 20 mm shaft bore, 85.7 mm length and width, and compatibility with ISO requirements. The NSK-RHP SF20 R flange bearing unit is valued for its resilience, easy fit-and-remove installation, and stable performance in daily industrial operations.
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Frequently Asked Questions
The inside diameter of this bearing unit is 20 mm, designed for precise shaft fitment.
It is constructed from cast iron, providing durability and corrosion resistance.
This model features four mounting holes, each with a diameter of 10 mm.
The mounting face measures 85.7 mm in length and width, allowing for stable attachment.
It utilizes a taper bore type, which simplifies replacement and installation.
The depth of this bearing unit is 27.8 mm.
It is equipped with nitrile/fabric seals that help retain lubrication and protect against contaminants.
The C3 internal radial clearance is designed for performance in demanding applications, accommodating thermal expansion and vibration.
Typical applications include conveyor systems, agricultural equipment, processing machinery, and HVAC fans.
The mounting hole spacing is 63.5 mm center-to-center.
Yes, it complies with ISO standards and is manufactured to BS1452 cast iron grade.
It is supplied with grease nipples and comprehensive fitting instructions for easy maintenance.
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