The NTN UC206-102D1 is the inch-bore version of the UC206 insert-bearing family.

It uses the same general outer body size as the metric UC206-D1, but the bore is machined for a:

1-1/8 inch shaft

instead of a 30 mm shaft.

This is particularly useful in machinery designed with imperial shaft dimensions while still using standard 206-series mounted-bearing housings.

The bearing incorporates:

• Wide inner ring
• Spherical outside diameter
• Two set screws for shaft locking
• Sealed insert-bearing construction
• Compatibility with 206-series housings when geometry matches

⚙️ Applications

• Pillow block bearing units
• Flange bearing units
• Agricultural machinery
• Conveyor systems
• Fans and blowers
• Material-handling equipment
• Roller assemblies
• Packaging machinery
• Light industrial drives
• General mounted-bearing systems

🎯 Benefits

✔ 1-1/8 inch shaft bore

✔ 62 mm spherical OD

✔ Standard UC206 body envelope

✔ Wide inner-ring construction

✔ Two set screws for positive shaft locking

✔ Suitable for inch-size shafts

✔ Fits compatible 206-series housings

✔ Convenient replacement for imperial-shaft applications

✔ Cross-reference assistance available

🧠 Technical Insight

• NTN UC206-102D1
• UC206-18 Market Reference
• 1-1/8 in Bore
• 28.575 mm Bore
• 62 mm Outside Diameter
• 38.1 mm Inner Ring Width
• Two Set Screws
• 1/4-28 UNF Set Screw Thread

✅ Key Features

• NTN Industrial Bearing
• Model UC206-102D1
• Inch-Bore Insert Bearing
• UC206 Series
• Spherical Outer Ring
• Wide Inner Ring
• Two Set Screws
• Mounted-Bearing Application

📊 Specifications

Brand: NTN

Model / Bearing Number: UC206-102D1

Common Market Reference: UC206-18

Product Type: Insert Ball Bearing

Bearing Series: UC206

Bearing Type: Wide Inner Ring Insert Ball Bearing

Bore Diameter (d): 1-1/8 in / 1.1250 in / 28.575 mm

Outside Diameter (D): 62.00 mm

Inner Ring Width (B): 38.10 mm

Outer Ring Width: Same 206-series body family; verify exact NTN drawing if the specific C-dimension is required

Rolling Elements: Ball

Number of Rows: 1

Outer Ring: Spherical OD

Inner Ring: Wide / extended inner ring

Locking Method: Two Set Screws

Set Screw Thread: 1/4-28 UNF

Seal Type: Verify exact NTN execution if critical

Lubrication: Grease-lubricated insert-bearing configuration

Relubrication: Depends on bearing/housing execution

Internal Clearance: Verify NTN specification if critical

Cage: Verify exact production specification

Load Rating: Verify manufacturer data for the exact UC206-102D1 execution

Speed Rating: Verify manufacturer data for the exact UC206-102D1 execution

Shaft Fit: Nominal 1-1/8 in

Housing Fit: Compatible with appropriate 206-series spherical-seat housings

Installation Consideration: Seat the bearing correctly in the housing, align the shaft, and tighten both set screws evenly to the specified torque

🔁 Equivalent

Suitable replacement or cross-reference candidates include:

• NTN UC206-102D1
• UC206-18
• 1-1/8 in Bore UC206 Insert Bearing
• 28.575 mm Bore Insert Bearing
• 62 mm OD Insert Bearing
• Set Screw Locking Insert Bearing
• 206-Series Inch-Bore Insert Bearing
• Pillow Block Insert Bearing
• Flange Unit Insert Bearing
• Imperial-Shaft UC206 Bearing

Important Note on NTN Inch-Bore Coding

The 1-1/8 inch bore equals:

1.1250 in = 28.575 mm

and is different from the metric UC206-D1, which uses:

30.00 mm bore

So the two parts share the same general 206-series outer body but are intended for different shaft sizes.

UC206-102D1 vs UC206-D1

The difference in bore is:

30.00 − 28.575 = 1.425 mm

which is far too large to treat the bearings as interchangeable on the same shaft.

(Always confirm the shaft diameter before ordering the inch-bore UC206 version.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for pillow blocks, flange units, conveyors, fans, rollers, agricultural machinery, packaging equipment, and mounted-bearing systems requiring a 1-1/8 inch shaft with a UC206-size insert bearing.

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification