The MRC (SKF) ER-19 is an industrial ball bearing designed for rotating shaft assemblies where positive locking of the bearing inner ring to the shaft is required.

Its 1-3/16 inch bore corresponds to approximately 30.16 mm, making it particularly useful for machinery designed around inch-size shafts while retaining a metric 62 mm outside diameter.

Key dimensions are:

Bore Diameter: 1-3/16 inch / 1.1875 in / approximately 30.16 mm

Outside Diameter: 2.4409 in / 62 mm

Outer Race Width: 0.875 in / approximately 22.2 mm

The bearing uses a set-screw locking arrangement, with the locking screws positioned at approximately 120° spacing. This arrangement secures the inner ring to the shaft and helps prevent relative movement between the shaft and bearing inner ring when correctly installed and tightened.

The bearing is manufactured from 52100 bearing steel, a high-carbon chromium alloy widely used in rolling bearings because of its hardness, wear resistance, rolling-contact fatigue resistance, and dimensional stability.

The specified maximum rotational speed is approximately:

Maximum Speed: 8,000 RPM

Actual permissible operating speed can be lower depending on load, lubrication, shaft fit, housing fit, balance, temperature, alignment, and operating environment.

This ER-series bearing is particularly suitable for industrial equipment where easy shaft mounting, set-screw retention, and inch-size shaft compatibility are required.

⚙️ Applications

• Electric motors
• Industrial gearboxes
• Conveyor drive systems
• Fans and blowers
• Agricultural machinery
• Pumps
• Mechanical transmissions
• Industrial shaft assemblies
• Material-handling equipment
• Legacy OEM machinery

🎯 Benefits

✔ Fits a 1-3/16 inch shaft

✔ Positive shaft retention using set screws

✔ Set screws positioned at approximately 120° spacing

✔ Manufactured from 52100 bearing steel

✔ Suitable for speeds up to approximately 8,000 RPM

✔ Low-friction rolling-element bearing construction

✔ Suitable for industrial maintenance and overhaul

✔ Convenient for inch-size shaft applications

✔ Cross-reference assistance available

🧠 Technical Insight

• MRC (SKF) ER-19 Bearing Reference
• 1-3/16-Inch Bore
• 62 mm Outside Diameter
• 22.2 mm Outer Race Width
• Set-Screw Locking System
• 120° Set-Screw Spacing
• 52100 Bearing Steel
• Maximum Speed Approximately 8,000 RPM

✅ Key Features

• MRC (SKF) Industrial Bearing
• ER-19 Reference
• Inch-Size Shaft Bore
• Set-Screw Shaft Locking
• 52100 High-Carbon Chromium Bearing Steel
• 30.16x62x22.2 mm Nominal Size
• High-Speed Capability up to 8,000 RPM
• Cross-Reference Support Available

📊 Specifications

Brand: MRC (SKF)

Model / Bearing Number: ER-19

Bearing Series: ER

Type: Industrial Ball Bearing with Set-Screw Locking

Rolling Element: Ball

Bore Size: 1-3/16 inch / 1.1875 in / approximately 30.16 mm

Outside Diameter (OD): 2.4409 inches / 62 mm

Outer Race Width: 0.875 inch / approximately 22.2 mm

Nominal Metric Size: Approximately 30.16 × 62 × 22.2 mm

Locking Type: Set Screw

Set-Screw Arrangement: Approximately 120° spacing

Material: 52100 Bearing Steel

Inner-Ring Configuration: ER-series shaft-locking configuration; verify total inner-ring width and extension against the original bearing where critical

Seal / Shield: Verify actual ER-19 closure configuration

Cage: Verify actual MRC ER-19 specification

Internal Clearance: Verify manufacturer or original-equipment requirement

Lubrication: Verify actual bearing lubrication and relubrication requirement

Load Capability: Primarily radial-load support with axial capability depending on actual internal bearing geometry

Maximum Speed: Approximately 8,000 RPM

Speed Consideration: Maximum permissible speed depends on lubrication, bearing load, shaft condition, locking accuracy, temperature, alignment, and operating conditions

Temperature Range: Depends on lubricant, cage, closure arrangement, shaft fit, and operating environment

Shaft Fit: 1-3/16 inch nominal shaft with set-screw locking; confirm actual shaft tolerance before installation

Housing Fit: For nominal 62 mm bearing OD; verify housing tolerance and application requirement

Installation Consideration: Position bearing correctly on the shaft, confirm shaft surface condition, tighten set screws according to the applicable mounting procedure, and verify alignment before operation

Standard: Manufacturer-Specific MRC ER-Series Industrial Bearing

🔁 Equivalent

Suitable replacement or cross-reference candidate for compatible:

• MRC ER-19
• MRC (SKF) ER-19 Bearing
• 1-3/16 Inch Bore Ball Bearing
• 30.16x62x22.2 mm Bearing
• Set-Screw Locking Ball Bearing
• 62 mm OD Industrial Bearing
• ER-Series Shaft Bearing
• Extended / Locking Inner-Ring Bearing
• OEM ER-19 Replacement Bearing
• Industrial Inch-Bore Ball Bearing

A replacement bearing with the same basic dimensions is not automatically interchangeable with MRC ER-19. It should also match the 1-3/16 inch bore, 62 mm OD, 22.2 mm outer-race width, set-screw locking arrangement, screw position, inner-ring geometry, closure type, internal clearance, lubrication, speed capability, load rating, shaft tolerance, and housing fit.

The 8,000 RPM rating should also be treated as a maximum operating reference rather than a guaranteed speed for every application. Actual allowable speed may be lower depending on installation and service conditions.

(Always verify the original ER-19 bearing, shaft tolerance, housing dimensions, set-screw mounting arrangement, lubrication, load, and operating speed before ordering an equivalent.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for motors, conveyors, gearboxes, pumps, fans, agricultural equipment, mechanical drives, industrial shaft assemblies, material-handling systems, and compatible OEM machinery using a 1-3/16-inch shaft.

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification