---
product_id: 144307657
title: "Sealmaster MSF-28 Medium Duty Flange Unit, 4 Bolt, Regreasable, Felt Seals, Setscrew Locking Collar, Cast Iron Housing, 1-3/4\" Bore, 5-5/8\" Overall Length, 4-3/8\" Bolt Hole Spacing Width, 9/16\" Flange Height, ±2 Degrees Misalignment Angle"
brand: "sealmaster"
price: "$873.38"
currency: USD
in_stock: true
url: https://www.desertcart.ec/products/144307657-sealmaster-msf-28-medium-duty-flange-unit-4-bolt-regreasable
store_origin: EC
region: Ecuador
---

# Sealmaster MSF-28 Medium Duty Flange Unit, 4 Bolt, Regreasable, Felt Seals, Setscrew Locking Collar, Cast Iron Housing, 1-3/4" Bore, 5-5/8" Overall Length, 4-3/8" Bolt Hole Spacing Width, 9/16" Flange Height, ±2 Degrees Misalignment Angle

**Brand:** sealmaster
**Price:** $873.38
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Sealmaster MSF-28 Medium Duty Flange Unit, 4 Bolt, Regreasable, Felt Seals, Setscrew Locking Collar, Cast Iron Housing, 1-3/4" Bore, 5-5/8" Overall Length, 4-3/8" Bolt Hole Spacing Width, 9/16" Flange Height, ±2 Degrees Misalignment Angle by sealmaster
- **How much does it cost?** $873.38 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/144307657-sealmaster-msf-28-medium-duty-flange-unit-4-bolt-regreasable)

## Best For

- sealmaster enthusiasts

## Why This Product

- Trusted sealmaster brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

This Sealmaster medium-duty flange unit has a cast iron housing with four bolt holes, felt seals, and setscrew locking collar. It is designed for mounting onto bearing surfaces perpendicular to the shaft axis. The one-piece housing has machined foot pads and is made of solid cast iron for rigidity and vibration damping. It is equipped with a grease fitting on the outer surface for reapplying lubricant. A locking pin-and-dimple system feeds oil through the bearing and prevents outer-ring rotation within the housing. The double-sealed, deep-groove ball bearing insert in the housing is rated "medium duty" for applications with moderate to high radial loads and moderate thrust or combination loads. The bearing is made of vacuum degassed 52100 chrome steel, and the inner and outer races are coated with black oxide for corrosion resistance. The inner ring is extended to provide extra shaft support. A pin and dimple anti-rotation rivet on the outer ring prevents rotation of the ring in the housing, reducing heat buildup and prolonging the bearing life. This self-aligning bearing has a convex sphered outer surface that compensates for misalignments. Low-friction felt labyrinth seals on both sides of the bearing retain lubricant applied at manufacture and help keep contaminants out. For added protection, flingers on the inner ring deflect contaminants away from the seals. The bearing locks onto the shaft with two setscrews spaced 120 degrees apart for a three-point contact hold. This lock type minimizes ring distortion and vibration and is suitable for low to moderate speed applications where the shaft rotates in a single or reversing direction. Flanged bearing units are suitable for use in industrial and commercial applications including conveyors, fans and blowers, construction machinery, and processing equipment, among many others.Mounted bearings combine a bearing mounted inside a housing unit. The bearing housing replaces the need for a casting or weldment to position the bearing securely for reliable operation, and its design determines the type of insert bearing. Insert bearings use rolling elements (ball, cylindrical, spherical, barrel, needle, spindled, or tapered) to maintain the separation between moving parts to reduce rotational friction, and to support radial and axial loads. Available in a variety of materials and mounting configurations, mounted bearings can be one- or two-piece, they can have an extended inner ring and locking device, and they can have seals and end caps that retain lubrication and protect the working parts of the bearing from environmental debris. Mounted bearings support shafts in a variety of mounting configurations (flange block, hanger, pillow block, and take-up block), and are used in a range of applications from light duty shaft guidance on conveyors to road building equipment and crushers.Sealmaster manufactures bearings and bearing accessories. The company, founded in 1938 and headquartered in Elsmere, KY, meets International Organization for Standardization (ISO) standard 9001.

## Features

- Make sure this fits by entering your model number.
- Cast iron flanged housing with a solid base for vibration damping and structural rigidity
- Medium-duty, deep-groove ball bearing insert for applications with moderate to high radial loads and moderate thrust or combination loads
- Felt labyrinth seals on both sides of the bearing keep lubricant in and contaminants out and flingers provide extra sealing protection
- Setscrew lock for a three-point contact hold on the shaft
- Grease fitting on the housing for reapplying lubricant

## Images

![Sealmaster MSF-28 Medium Duty Flange Unit, 4 Bolt, Regreasable, Felt Seals, Setscrew Locking Collar, Cast Iron Housing, 1-3/4" Bore, 5-5/8" Overall Length, 4-3/8" Bolt Hole Spacing Width, 9/16" Flange Height, ±2 Degrees Misalignment Angle - Image 1](https://m.media-amazon.com/images/I/91p5SE-XFwL.jpg)
![Sealmaster MSF-28 Medium Duty Flange Unit, 4 Bolt, Regreasable, Felt Seals, Setscrew Locking Collar, Cast Iron Housing, 1-3/4" Bore, 5-5/8" Overall Length, 4-3/8" Bolt Hole Spacing Width, 9/16" Flange Height, ±2 Degrees Misalignment Angle - Image 2](https://m.media-amazon.com/images/I/71V-O0Cn-DL.jpg)
![Sealmaster MSF-28 Medium Duty Flange Unit, 4 Bolt, Regreasable, Felt Seals, Setscrew Locking Collar, Cast Iron Housing, 1-3/4" Bore, 5-5/8" Overall Length, 4-3/8" Bolt Hole Spacing Width, 9/16" Flange Height, ±2 Degrees Misalignment Angle - Image 3](https://m.media-amazon.com/images/I/71JqzySO1dL.jpg)
![Sealmaster MSF-28 Medium Duty Flange Unit, 4 Bolt, Regreasable, Felt Seals, Setscrew Locking Collar, Cast Iron Housing, 1-3/4" Bore, 5-5/8" Overall Length, 4-3/8" Bolt Hole Spacing Width, 9/16" Flange Height, ±2 Degrees Misalignment Angle - Image 4](https://m.media-amazon.com/images/I/71MBtswcfoL.jpg)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-28*