CYR Yoke Type Track Rollers

Heavy-Duty Yoke Type Track Roller Bearings for Industrial Machinery, Conveyors and Automation

SUMA CYR yoke type track rollers are designed for applications where a rolling bearing runs directly against a cam, track, guideway, or machine surface.

Unlike stud type cam followers, CYR track rollers use a separate shaft or pin for mounting, giving machine designers greater flexibility in shaft diameter, mounting width, support structure, and load distribution.

The CYR series is available in a broad range of inch sizes, from 3/4 inch to 10 inch outside diameter, with different roller widths, bore sizes, and load capacities. Both non-sealed and sealed configurations are available for different industrial operating conditions.

Typical applications include:

• Industrial automation

• Conveyor systems

• Material handling equipment

• Heavy-duty machinery

• Guide and track systems

• Transfer equipment

• Industrial equipment

• Cam and track mechanisms

Need a CYR replacement or equivalent? Send us your existing part number, dimensions, or drawing for technical evaluation.

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CYR Yoke Type Track Roller at a Glance

The published SUMA CYR range covers models from CYR-3/4 through CYR-10, with the catalog providing dimensional and load-capacity data for the listed configurations.

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What Is a CYR Yoke Type Track Roller?

A yoke type track roller is a roller bearing specifically designed to operate on a track, cam, guide surface, or similar machine component.

The CYR configuration uses a separate shaft rather than an integrated mounting stud.

The basic load path can be understood as:

Track → Outer Ring → Rolling Elements → Inner Ring → Shaft → Machine Frame

This construction makes the mounting shaft an important part of the complete bearing system.

For OEM machine designers, this provides greater freedom to optimize:

• Shaft diameter

• Shaft length

• Shaft material

• Mounting width

• Shoulder design

• Axial retention

• Machine frame structure

• Load distribution

This is one of the main reasons yoke type track rollers are considered for industrial machinery and heavy-duty track applications.

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Why Choose CYR Yoke Type Track Rollers?

1. Flexible Shaft-Based Mounting

Unlike stud type cam followers, the CYR roller does not require an integrated mounting stud.

The machine designer can select an appropriate shaft or pin according to the application.

This can be advantageous when the machine requires a customized mounting structure.

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2. Wide Inch Size Range

The CYR range covers a broad range of outside diameters.

Available catalog sizes extend from:

CYR-3/4 → CYR-7/8 → CYR-1 → CYR-1 1/8 → CYR-1 1/4 → CYR-1 3/8 → CYR-1 1/2 → CYR-1 5/8 → CYR-1 3/4 → CYR-1 7/8 → CYR-2 → CYR-2 1/4 → CYR-2 1/2 → CYR-2 3/4 → CYR-3 → CYR-3 1/4 → CYR-3 1/2 → CYR-4 → CYR-5 → CYR-6 → CYR-7 → CYR-8 → CYR-9 → CYR-10.

This makes the series particularly suitable for applications where inch-based dimensions are required.

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CYR Technical Parameters

CYR York Type Cam Follower.pdf

The following table is based on the SUMA CYR technical catalog.

All dimensions are in inches. Load capacities are in pounds (LBS).

*For these larger sizes, the supplied catalog lists the sealed designation and sealed reference number; it does not separately show a non-sealed reference number.

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CYR Model Selection by Size

The CYR series can be grouped into several practical size ranges.

Compact CYR Track Rollers

CYR-3/4 to CYR-1 7/8

Suitable starting points for applications where installation space is limited and relatively small roller dimensions are required.

The catalog lists outside diameters from 0.750 to 1.875 inch across this range.

Medium-Size CYR Track Rollers

CYR-2 to CYR-4

These models cover outside diameters from 2.000 to 4.000 inches and provide progressively higher catalog load capacities.

Large CYR Track Rollers

CYR-5 to CYR-10

The larger models extend from 5 to 10 inches OD, with catalog static capacities ranging from 135,900 lb to 431,130 lb and dynamic capacities from 46,575 lb to 131,545 lb.

These models should be evaluated carefully for shaft strength, track design, mounting rigidity, operating speed, and actual working load.

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Static vs Dynamic Load Capacity

The CYR catalog provides both static capacity and dynamic capacity for the listed models.

For example:

CYR-1

• Static Capacity: 6,120 lb

• Dynamic Capacity: 2,225 lb

CYR-2

• Static Capacity: 21,140 lb

• Dynamic Capacity: 8,090 lb

CYR-3

• Static Capacity: 49,820 lb

• Dynamic Capacity: 15,720 lb

CYR-4

• Static Capacity: 89,540 lb

• Dynamic Capacity: 29,985 lb.

For larger sizes:

CYR-8

• Static Capacity: 288,200 lb

• Dynamic Capacity: 92,200 lb

CYR-10

• Static Capacity: 431,130 lb

• Dynamic Capacity: 131,545 lb.

Do not use catalog capacity as the actual allowable working load without application analysis.

The final selection should consider load direction, shock, speed, shaft strength, track condition, lubrication, and required service life.

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Sealed vs Non-Sealed CYR Track Rollers

SUMA's CYR catalog provides sealed configurations designated with “-S”, together with corresponding sealed reference numbers beginning with “CCYR” for the listed sizes.

For example:

*The supplied catalog does not show a separate non-sealed reference number for these larger sizes.

For applications exposed to dust, moisture, oil or other contaminants, the sealed configuration should be evaluated based on the actual operating environment.

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CYR vs Stud Type Cam Followers

One of the most important decisions in track roller selection is whether to use a yoke type track roller or a stud type cam follower.

Choose CYR when:

• A separate shaft is preferred

• Shaft dimensions need to be customized

• The machine frame is designed around a shaft

• Greater mounting flexibility is required

• A yoke-type track roller configuration is preferred

Consider a stud type cam follower when:

• Installation space is limited

• Integrated mounting is preferred

• A compact mounting solution is required

• The machine already uses a stud-type design

The correct choice ultimately depends on the actual machine design rather than the bearing series name.

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CYR Track Rollers for Conveyor Systems

Conveyor equipment is a major application area for track roller bearings.

CYR rollers can be considered for:

• Conveyor guide systems

• Transfer mechanisms

• Side guide systems

• Pallet handling equipment

• Material handling systems

• Track-guided conveyors

For conveyor applications, engineers should evaluate:

Load → Impact → Track → Shaft → Speed → Lubrication → Environment

A conveyor operating continuously under heavy load requires more than a dimensional bearing match.

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CYR Track Rollers for Industrial Automation

In industrial automation, track rollers can support repetitive linear or cam-driven movement.

Potential applications include:

• Automated transfer systems

• Assembly machines

• Positioning mechanisms

• Guide systems

• Material transfer equipment

• Automated conveyors

For high-cycle applications, selection should take into account:

• Working load

• Operating speed

• Duty cycle

• Track surface

• Lubrication

• Contamination

• Required service life

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CYR Track Rollers for Material Handling

Material handling systems can expose track rollers to significant radial and impact loads.

Typical applications include:

• Transfer equipment

• Heavy conveyor systems

• Industrial handling mechanisms

• Guide systems

• Automated material movement equipment

For these applications, the bearing should be evaluated together with the supporting shaft and machine frame.

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Why Shaft Strength Matters

A CYR yoke type track roller uses a separate shaft.

Therefore:

Bearing load capacity ≠ complete assembly load capacity.

Even if the bearing has sufficient catalog load capacity, the shaft may become the limiting component if it is undersized or unsupported.

The shaft should be checked for:

• Bending

• Shear

• Deflection

• Fatigue

• Mounting support

For heavy-load applications, SUMA recommends evaluating the bearing + shaft + machine frame + track as one mechanical system.

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Track Condition Matters

The bearing is only one part of a track roller system.

The track should also be evaluated for:

• Hardness

• Surface finish

• Alignment

• Flatness

• Contact geometry

• Contamination

• Lubrication

Poor track conditions can increase contact stress and accelerate wear even when the bearing itself is correctly selected.

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How to Select the Right CYR Track Roller

Use this selection process for a new machine or replacement project.

Step 1 — Determine the Actual Load

Calculate the working load on the roller.

Include:

• Equipment weight

• Product weight

• Acceleration

• Deceleration

• Shock

• Vibration

Step 2 — Determine Available Space

Check:

• Maximum OD

• Roller width

• Bore

• Overall width

• End plate diameter

Step 3 — Determine the Shaft

Select the shaft according to:

• Bearing bore

• Load

• Bending moment

• Support structure

• Required rigidity

Step 4 — Check Dynamic Capacity

Compare the actual operating load with the catalog dynamic capacity.

Step 5 — Check Static Capacity

Static capacity should also be evaluated for:

• Stationary loads

• Shock loads

• Peak loads

• Heavy impact

Step 6 — Check Track Conditions

Verify track material, hardness, surface condition and alignment.

Step 7 — Check Environment

Consider whether a sealed configuration is appropriate.

Step 8 — Confirm the Final Model

The final model should be confirmed against the complete application requirements.

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CYR Track Roller Replacement

If you are replacing an existing CYR track roller, do not select a replacement based only on the outside diameter.

Provide the following information:

Existing part number

Outside diameter

Width

Bore

Overall width

End plate diameter

Static/dynamic load requirement

Operating speed

Track condition

Sealed or non-sealed requirement

A drawing or photograph of the existing bearing can also help with identification.

SUMA can evaluate the available CYR configuration and recommend a suitable replacement based on the actual application.

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CYR Replacement and Equivalent Selection

Searches such as:

• CYR track roller replacement

• CYR roller bearing replacement

• CYR equivalent

• CYR alternative

• yoke type track roller replacement

• industrial track roller supplier

• heavy duty track roller manufacturer

usually indicate a commercially valuable replacement requirement.

However, an equivalent should not be determined solely from the model number.

The following should be compared:

Dimensions + load capacity + mounting + shaft + sealing + operating conditions

A bearing that physically fits may not necessarily provide equivalent performance.

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CYR Track Roller FAQ

What is a CYR yoke type track roller?

A CYR yoke type track roller is a track-running roller bearing designed to operate against a cam, guide, track or machine surface. It uses a separate shaft or pin for mounting.

What sizes are available?

The SUMA catalog covers CYR sizes from 3/4 inch to 10 inch outside diameter.

Are CYR track rollers available with seals?

Yes. The catalog lists sealed configurations using the “-S” designation and corresponding CCYR sealed reference numbers for the listed models.

What is the largest CYR model listed?

The supplied catalog lists CYR-10-S / CCYR-10-S, with a 10-inch OD, 5.25-inch width, 4.255-inch ID, 5.5-inch width over end plates, and catalog capacities of 431,130 lb static and 131,545 lb dynamic.

What is the smallest CYR model listed?

The catalog starts with CYR-3/4, with a 0.75-inch outside diameter.

Is CYR suitable for conveyors?

CYR yoke type track rollers can be considered for conveyor and track applications, provided the actual load, speed, shaft, track and environmental conditions are suitable.

What is the difference between CYR and a stud type cam follower?

The main mounting difference is that CYR uses a separate shaft or pin, while a stud type cam follower incorporates the mounting stud into the bearing assembly.

Can CYR replace another yoke type track roller?

Potentially, but the actual dimensions and performance requirements must be checked before approving a replacement.

How do I select a CYR model?

Start with the required OD, width, bore, load capacity and mounting space, then verify shaft strength, track condition, speed, sealing and service-life requirements.

Can SUMA supply CYR replacements?

Yes. For a replacement evaluation, provide the existing part number, dimensions, drawing or application information.

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SUMA CYR Yoke Type Track Roller Manufacturer

SUMA has 25+ years of manufacturing experience in cam follower bearings and industrial roller bearings.

For OEMs, machinery manufacturers and industrial end users, SUMA provides CYR yoke type track roller solutions for applications where reliable rolling contact, appropriate load capacity and flexible shaft-based mounting are required.

Our CYR range covers inch-size track rollers from 3/4" to 10" OD, with published static and dynamic capacity data for the listed models.

Whether you are:

• Designing a new machine

• Replacing an existing track roller

• Looking for a CYR equivalent

• Sourcing an OEM supplier

• Standardizing multiple bearing sizes

• Looking for an alternative supplier

send SUMA your part number, drawing, dimensions or application requirements.

We can evaluate the required CYR configuration for your application.

Request a CYR Track Roller Quote

Please provide:

• Part number

• Required quantity

• OD / ID / width

• Load

• Speed

• Application

• Sealed or non-sealed requirement

• Drawing, if available

SUMA — Cam Follower & Track Roller Bearing Manufacturer with 25+ Years of Manufacturing Experience.