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CYR 1 3/4 S CCYR 1 3/4-S
SUMA
0.5 ''
1.75''
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CYR 1 3/4 S & CCYR 1 3/4 S Sealed Yoke Type Cam Follower Bearings
SUMA CYR 1 3/4 S and CCYR 1 3/4 S are sealed yoke type cam follower bearings designed for track-running, linear motion, indexing, conveying and industrial automation applications. Both models feature a 1.750 inch roller diameter, 0.500 inch bore and 1.000 inch roller width, while the main difference is the roller profile.
The CYR 1 3/4 S uses a cylindrical roller outside diameter for applications requiring a flat and stable contact surface. The CCYR 1 3/4 S uses a crowned roller outside diameter to help accommodate minor alignment variations and reduce the risk of unfavorable edge contact.
For OEMs, distributors and industrial users looking for a sealed yoke roller bearing, yoke type cam follower, track roller or replacement cam follower bearing, SUMA provides CYR and CCYR configurations with stable manufacturing quality and export experience.
The two models share the same basic mounting dimensions, making them suitable for similar yoke-mounted applications. The key difference is the roller profile.
| Feature | CYR 1 3/4 S | CCYR 1 3/4 S |
|---|---|---|
| Bearing Type | Yoke Type Cam Follower | Yoke Type Cam Follower |
| Roller Diameter | 1.750 in | 1.750 in |
| Roller Width | 1.000 in | 1.000 in |
| Bore Diameter | 0.500 in | 0.500 in |
| Roller Profile | Cylindrical / Flat OD | Crowned OD |
| Sealing | Sealed | Sealed |
| Typical Contact | Flat track surface | Track surface with potential alignment variation |
| Main Advantage | Stable flat-surface contact | Improved tolerance to slight misalignment |
| Typical Applications | Automation, conveyors, linear tracks | Automation, conveyors, guide tracks, mechanisms |
The selection between CYR and CCYR should be based primarily on the condition of the mating track.
Choose CYR 1 3/4 S when:
The track surface is relatively flat and properly aligned.
A cylindrical roller profile is preferred.
The load path is well controlled.
The mechanism has good manufacturing and installation accuracy.
The application requires a conventional yoke type track roller.
Choose CCYR 1 3/4 S when:
Minor angular misalignment may occur.
The roller may not remain perfectly parallel to the track.
You want to reduce the possibility of concentrated edge contact.
The track geometry favors a crowned roller.
The mechanism is exposed to installation or alignment variations.
For applications where the roller and track alignment cannot be guaranteed, the crowned CCYR configuration can be a more forgiving solution.
The CYR 1 3/4 S is a cylindrical yoke type cam follower designed to run directly against a track, cam, guideway or similar mating surface.
Its 1.750 inch roller diameter provides a relatively large rolling contact diameter while the 0.500 inch bore allows installation on an appropriate shaft or yoke arrangement.
The cylindrical outside diameter is particularly useful when the mating track is flat and the load distribution is intended to remain consistent across the roller width.
1.750 inch roller outside diameter
1.000 inch roller width
0.500 inch bore
Sealed construction
Full-complement needle roller design
High radial load capacity
Suitable for continuous track-running applications
Designed for industrial automation and mechanical motion systems
The sealed construction helps protect the internal rolling elements from contaminants while retaining lubricant inside the bearing. This is particularly valuable in machinery where frequent relubrication or bearing maintenance is difficult.
The CCYR 1 3/4 S has the same basic dimensions as the CYR 1 3/4 S but uses a crowned roller outside diameter.
A crowned roller is designed to create a more favorable contact pattern when there are small deviations between the roller and track. Instead of relying on a perfectly flat and parallel contact condition, the crowned profile can help reduce localized edge loading caused by slight angular misalignment.
This makes CCYR particularly useful for mechanisms where manufacturing tolerances, installation conditions or structural deflection can affect the roller-track relationship.
1.750 inch roller diameter
1.000 inch roller width
0.500 inch bore
Crowned outside diameter
Sealed construction
Full-complement needle rollers
High radial load capability
Suitable for guide tracks and industrial mechanisms
CYR York Type Cam Follower.pdf
| Parameter | CYR 1 3/4 S | CCYR 1 3/4 S |
| Bearing Type | Sealed Yoke Type Cam Follower | Sealed Yoke Type Cam Follower |
| Bore | 0.500 in | 0.500 in |
| Roller Diameter | 1.750 in | 1.750 in |
| Roller Width | 1.000 in | 1.000 in |
| Roller Profile | Cylindrical | Crowned |
| Dynamic Load Rating | 6,385 lbf | 6,385 lbf |
| Static Load Rating | 14,800 lbf | 14,800 lbf |
| Limiting Speed | Up to 2,200 rpm* | Up to 2,200 rpm* |
| Sealing | Yes | Yes |
| Rolling Element | Needle Rollers | Needle Rollers |
*Actual permissible speed depends on lubrication, load, track condition, temperature, mounting arrangement and operating environment. Please contact SUMA for application-specific verification.
Unlike a conventional stud type cam follower, a yoke type cam follower does not have an integral threaded stud. The bearing is mounted through its inner bore using a shaft, pin or suitable mounting arrangement.
This configuration provides several advantages for machine designers.
The separate mounting shaft allows engineers to design the mounting structure according to the available space, load direction and shaft diameter.
Yoke type cam followers are commonly used where the primary load is radial and the roller runs directly against a track.
The bearing can be installed into a fork, yoke, support bracket or custom mechanical structure without redesigning the complete mechanism around a fixed stud.
For OEM machinery manufacturers, yoke type construction provides greater freedom to define the shaft material, shaft diameter, mounting arrangement and retention method.
One of the most important features of the CYR 1 3/4 S and CCYR 1 3/4 S is the sealed design.
A cam follower often operates outside a protected bearing housing. The roller may therefore be exposed to dust, metal particles, moisture, lubricant contamination and other industrial debris.
A sealed cam follower helps reduce the possibility of contaminants entering the rolling-element area while retaining the internal lubricant.
This is especially important in:
Material handling equipment
Conveyor systems
Packaging machinery
Automated production lines
Machine tools
Assembly equipment
Industrial indexing mechanisms
Guide rail systems
However, sealing should not be considered a substitute for correct lubrication, proper track design or adequate environmental protection.
The internal rolling elements use a needle roller configuration designed to provide high radial load capacity within a compact bearing envelope.
Compared with a conventional ball bearing of similar size, a needle roller arrangement can provide a greater number of rolling elements and a larger effective contact area.
This is one reason cam follower bearings are widely used in applications where the available installation space is limited but the radial load is relatively high.
For demanding applications, bearing selection should consider not only the published dynamic load rating but also:
Static load
Shock loading
Track hardness
Track surface finish
Load distribution
Speed
Lubrication
Operating temperature
Mounting accuracy
Expected service life
CYR 1 3/4 S and CCYR 1 3/4 S can be used in a wide range of mechanical motion systems.
Cam followers can support linear or oscillating motion in automated machinery.
Typical applications include:
Transfer mechanisms
Indexing systems
Automated assembly equipment
Pick-and-place mechanisms
Guide tracks
Mechanical linkages
Yoke type cam followers can run along tracks or guide surfaces in material-handling equipment.
They are suitable for:
Conveyor guide mechanisms
Transfer conveyors
Pallet handling systems
Roller-guided mechanisms
Material handling equipment
Packaging machines frequently combine high-speed repetitive motion with limited installation space.
A sealed cam follower can provide a compact rolling interface for:
Cam-driven mechanisms
Guide systems
Sliding-to-rolling conversion mechanisms
Indexing equipment
Cam followers can be incorporated into:
Guide mechanisms
Tool positioning systems
Feed mechanisms
Mechanical actuators
Where machining accuracy and alignment are well controlled, CYR can be considered. Where slight alignment variation exists, CCYR may offer a more suitable roller profile.
The roller profile is not simply a naming difference.
A cylindrical roller has a relatively uniform outside diameter across the effective roller width. It is therefore best suited to a mating track where the contact geometry is controlled and alignment is good.
A crowned roller has a curved outside profile. The contact area is concentrated toward the central portion of the roller, helping reduce unfavorable edge contact when small angular deviations occur.
Therefore:
Flat and accurately aligned track → CYR
Potential alignment variation → CCYR
This distinction should be considered together with the actual track geometry rather than selecting the bearing only by bore and outside diameter.
A cam follower does not operate independently. Its service life depends heavily on the mating track.
Even a high-quality cam follower can experience premature wear if the track is too soft, rough, contaminated or incorrectly aligned.
Before selecting CYR 1 3/4 S or CCYR 1 3/4 S, evaluate:
Track hardness
Track width
Track flatness
Surface finish
Track straightness
Contact pressure
Shock load
Alignment
Lubrication
Environmental contamination
For heavy-load applications, the track should be strong enough to prevent excessive indentation or deformation under the maximum operating load.
Correct installation is essential for achieving the expected service life of a yoke type cam follower.
The mounting shaft should have the appropriate diameter, surface quality and hardness for the application.
Avoid:
Excessive clearance between shaft and bearing bore
Shaft bending under load
Incorrect axial retention
Misalignment between the two supporting structures
Contamination during assembly
Excessive mounting force applied through the rolling elements
The mounting arrangement should ensure that the bearing remains properly supported under the actual radial load.
For applications involving high shock loads or significant structural deflection, SUMA recommends reviewing the complete mounting arrangement rather than selecting the bearing based solely on the nominal load rating.
When searching for a replacement yoke roller bearing, buyers may encounter different naming systems between manufacturers.
Common search terms include:
Yoke type cam follower
Yoke mount cam follower
Yoke roller
Track roller bearing
Cam follower roller bearing
Sealed track roller
Sealed yoke roller bearing
Needle roller cam follower
Cylindrical yoke roller
Crowned yoke roller
For replacement projects, always verify the complete dimensional and performance requirements rather than relying only on the model number.
The following dimensions should be checked:
Bore × Roller OD × Roller Width
For CYR 1 3/4 S and CCYR 1 3/4 S, the key dimensions are:
0.500" bore × 1.750" roller OD × 1.000" roller width
A practical selection process is:
Step 1 — Check the installation dimensions
Confirm the required bore, roller diameter and roller width.
Step 2 — Calculate the operating load
Determine the maximum radial load, including static load and shock load.
Step 3 — Check the track
Verify track hardness, width, surface finish and geometry.
Step 4 — Evaluate alignment
If the roller and track can be accurately aligned, CYR may be appropriate.
If minor angular misalignment is expected, consider CCYR.
Step 5 — Check speed
Compare operating speed with the permissible speed for the selected bearing under actual lubrication and load conditions.
Step 6 — Check the environment
For dusty, dirty or exposed machinery, sealed construction can provide an important advantage.
Step 7 — Verify service life
For OEM applications, SUMA can evaluate the bearing selection based on load, speed, duty cycle and operating conditions.
SUMA specializes in the manufacturing and export of roller bearings, needle roller bearings and cam follower bearings.
For distributors and OEM customers, SUMA focuses on:
Stable dimensional quality
Consistent bearing performance
Industrial-grade materials and manufacturing
Sealed and open configurations
Cylindrical and crowned roller profiles
OEM and replacement applications
Export-oriented quality control
Technical support for bearing selection
SUMA supports customers who require cam follower bearings for industrial automation, conveyors, material handling and machinery manufacturing.
CYR 1 3/4 S is a sealed yoke type cam follower bearing with a 1.750 inch roller diameter, 0.500 inch bore and cylindrical roller outside diameter.
CCYR 1 3/4 S is a sealed yoke type cam follower with the same basic dimensions as CYR 1 3/4 S but with a crowned roller outside diameter.
The primary difference is the roller profile. CYR uses a cylindrical/flat roller profile, while CCYR uses a crowned roller profile.
Yes. The "S" designation identifies the sealed configuration.
Yes. CCYR 1 3/4 S is a sealed yoke type cam follower.
The bore is 0.500 inch.
Both CYR 1 3/4 S and CCYR 1 3/4 S have a 1.750 inch roller diameter.
A crowned cam follower such as CCYR 1 3/4 S can be considered when the roller may experience minor angular misalignment or when reducing edge contact is important.
CYR 1 3/4 S is suitable when the mating track is flat, properly aligned and provides a controlled rolling contact.
Yes. Both can be used in suitable conveyor guide, track and material-handling mechanisms, provided the load, speed, track and mounting conditions are within the bearing's design limits.
Yes. SUMA can supply yoke type cam followers and related roller bearing configurations for OEM, replacement and distributor applications.
Yes. SUMA works with industrial distributors, OEMs and machinery manufacturers requiring recurring or bulk quantities of cam follower bearings.
If you are replacing an existing yoke type cam follower or selecting bearings for a new machine, send SUMA the following information:
Required model
Quantity
Bore diameter
Roller diameter
Roller width
Radial load
Operating speed
Track material and hardness
Operating temperature
Lubrication conditions
Application and duty cycle
SUMA can help confirm whether CYR 1 3/4 S, CCYR 1 3/4 S or another yoke type cam follower is the better solution for your application.
Contact SUMA for pricing, availability, technical specifications and OEM requirements.
