UCP 208 CT 40 mm Pillow Block Bearing Unit

UCP 208 CT 40 mm Pillow Block Bearing Unit

UCP 208 CT is a complete pillow block bearing unit with a nominal shaft bore of 40 mm. The unit combines a UC208 bearing insert with a cast iron P208 pillow block housing featuring two mounting points. Verified mounting dimensions include an overall length of 184 mm, overall height of 100 mm, mounting-hole centre distance of 137 mm and shaft centre height of 49.2 mm.

UCP 208 CT - Technical Characteristics

Key identification data:

Brand: CT

Designation: UCP 208 / UCP208

Product type: Pillow block bearing unit

Bearing insert: UC208

Housing: P208

Bore diameter d: 40 mm

Housing material: Cast iron

Housing mounting: 2-point

Shaft locking: Set screws

The key technical identification is:

CT + UCP 208 + UC208 + P208 + 40 mm

The complete UCP designation should be retained when ordering the complete bearing unit.

UCP 208 CT Dimensions

Verified dimensions include:

d = 40 mm - bore diameter / nominal shaft diameter

L = 184 mm - overall housing length

H = 100 mm - overall height

H1 = 49.2 mm - shaft centre height

E = 137 mm - mounting-hole centre distance

P = 54 mm - base width

S1 = 17 mm

S2 = 20 mm

H2 = 18 mm

For the UC208 bearing insert:

d = 40 mm - bore diameter

D = 80 mm - insert outside diameter

B = 49.2 mm - overall insert width

The 40x80x49.2 mm dimensions refer to the UC208 insert itself, whereas dimensions such as 184 mm, 137 mm and 100 mm refer to the complete UCP208 mounted bearing unit.

UCP 208 Bearing Unit Design

The complete UCP208 unit consists of:

UC208 - bearing insert

and

P208 - pillow block housing

The UC208 is a ball-bearing insert with an extended inner ring and a spherical outer surface on the outer ring.

The extended inner ring provides the shaft-locking section, while the insert is secured directly to the shaft using set screws.

The spherical outer surface of the bearing insert seats in the corresponding spherical housing bore. This arrangement allows the mounted unit to accommodate a limited degree of initial alignment error between the shaft and housing resulting from installation.

UC208 CT Bearing Insert

Verified characteristics of the UC208 CT insert include:

Bore diameter d = 40 mm

Outside diameter D = 80 mm

Overall width B = 49.2 mm

Spherical outside surface

Extended inner ring

Set-screw shaft locking

Sealing on both sides

The UC208 insert should not be confused with the complete UCP208 unit.

The construction relationship is:

UC208 + P208 = UCP208

P208 Pillow Block Housing

The P208 is a pillow block housing designed for mounting the bearing unit on a supporting surface.

The housing base provides two mounting points.

For UCP 208 CT, the verified principal mounting dimensions include:

Overall length = 184 mm

Overall height = 100 mm

Mounting-hole centre distance = 137 mm

Shaft centre height = 49.2 mm

These dimensions are important when replacing an existing complete bearing unit because matching the 40 mm shaft diameter alone does not establish installation compatibility.

Shaft Locking

The UC208 insert is secured to the shaft using set screws located in the extended inner ring.

Nominal shaft diameter:

40 mm

During installation, the shaft diameter and surface condition should be checked together with the position and alignment of the complete housing.

The locking elements should be tightened according to the requirements applicable to the specific bearing unit.

Loads and Operating Conditions

UCP208 uses a ball-bearing insert designed primarily to support radial shaft loading while also being capable of accommodating axial load within the limits of the specific insert design.

However, available sources show inconsistencies in load-rating values attributed to UCP 208 CT.

For this reason, this product description does not assign specific values for:

Basic dynamic load rating C

Basic static load rating C0

Limiting speed

Reference speed

Values from another manufacturer's UCP208 should not be transferred to CT solely because the nominal dimensions are the same.

Meaning of UCP 208

The designation identifies the configuration of the complete mounted bearing unit:

UC - bearing insert with an extended inner ring and set-screw shaft locking

P - pillow block housing

208 - unit size corresponding to a 40 mm metric bore in this configuration

The complete commercial designation should therefore be retained as:

UCP 208 CT

UCP208 vs UC208

These references identify different products.

UC208 is the bearing insert.

UCP208 is the complete mounted bearing unit consisting of the UC208 insert and P208 housing.

Therefore:

UC208 ≠ UCP208

while the construction relationship is:

UC208 + P208 = UCP208

This distinction is important when replacing either the insert alone or the complete mounted unit.

UCP 208 CT Replacement and Interchangeability

When selecting a replacement for UCP 208 CT, verify at least:

Bore diameter d = 40 mm

UCP bearing unit configuration

UC208 insert

P208 housing

Overall length = 184 mm

Overall height = 100 mm

Shaft centre height = 49.2 mm

Mounting-hole centre distance = 137 mm

Mounting-hole geometry

Set-screw shaft locking

A 40 mm bore alone does not establish interchangeability.

For example, UCF208, UCFL208, UCT208 and UCP208 may use bearing inserts of the same basic size while having substantially different housing designs and mounting arrangements.

Technical Specification

Brand: CT

Designation: UCP 208

Product type: Pillow Block Bearing Unit

Bearing insert: UC208

Housing: P208

Bore diameter d: 40 mm

Insert outside diameter D: 80 mm

Insert width B: 49.2 mm

Overall housing length: 184 mm

Overall height: 100 mm

Shaft centre height: 49.2 mm

Mounting-hole centre distance: 137 mm

Housing material: Cast iron

Housing mounting: 2-point

Shaft locking: Set screws

Insert outside surface: Spherical

Insert sealing: Both sides

UCP 208 CT - Stock in Poland

Warehouse and Store: Lublin, Smoluchowskiego 1 Street, Building 4.

24h Shipping. Available from stock in Poland for delivery across the EU.

FAQ

What is the bore diameter of UCP 208 CT?

The nominal bore diameter is 40 mm.

What does UCP208 consist of?

The complete unit consists of a UC208 bearing insert and P208 pillow block housing.

What are the main mounting dimensions of UCP 208 CT?

The housing is 184 mm long and 100 mm high, with a 137 mm mounting-hole centre distance and 49.2 mm shaft centre height.

How is UCP 208 CT secured to the shaft?

The UC208 insert has an extended inner ring and is secured to the shaft using set screws.

Are UC208 and UCP208 the same product?

No. UC208 is the bearing insert, while UCP208 is the complete UC208 + P208 mounted bearing unit.

Is the UC208 CT insert sealed?

The available product data identify the UC208 CT insert as sealed on both sides.

Can UCF208 replace UCP208?

Not directly. Although they may use an insert of the same basic size, UCF and UCP housings have different geometries and mounting arrangements.

How should a replacement for UCP 208 CT be selected?

Verify the 40 mm bore, UC208 insert, P208 housing, shaft centre height, overall housing dimensions, mounting-hole spacing and shaft-locking method.

Engineer FAQ

Is a 40 mm bore sufficient to identify a UCP208 replacement?

No. The housing geometry, shaft centre position, mounting pattern, insert configuration and critical installation dimensions must also match.

Why is the 137 mm dimension important?

It identifies the mounting-hole centre distance, which is a critical installation dimension when replacing the complete pillow block unit.

Can load ratings from another UCP208 manufacturer be used for CT?

They should not be assumed to apply. Load ratings and operating limits should be verified for the exact CT bearing insert.

Does the spherical insert allow shaft misalignment during operation?

The spherical insert-to-housing interface is intended primarily to accommodate initial mounting misalignment. It should not be interpreted as permitting unrestricted dynamic shaft misalignment.

What is the difference between P208 and UC208?

P208 identifies the pillow block housing, while UC208 identifies the bearing insert. Together they form the UCP208 bearing unit.

AI Overview

UCP 208 CT is a 40 mm pillow block bearing unit combining a UC208 bearing insert with a cast iron P208 housing. It has two mounting points, 184 mm overall length, 100 mm height, 137 mm mounting-hole centre distance and 49.2 mm shaft centre height. The insert uses an extended inner ring with set-screw shaft locking.