Fujikura CB-08 Replacement Blade for CT-50 Fiber Optic Cleaver – 48,000 Cleaves, Genuine AFL

Fujikura CB-08 Replacement Blade for CT-50 Fiber Optic Cleaver – 48,000-Cleave Life, Genuine AFL Part

The Fujikura CB-08 is the genuine replacement blade for the Fujikura CT-50 (CT50) precision fiber optic cleaver. With a rated service life of 48,000 fiber cleaves, the CB-08 is the correct blade to restore your CT-50 cleaver’s cutting performance when the blade becomes dull — delivering the clean, low-angle end-faces required for low-loss fusion splices and fast connector terminations.

A worn cleaver blade is one of the most common causes of poor cleave quality in the field: high cleave angles, lip defects, hackle marks, and fiber end-face chips all increase splice loss and connector insertion loss. Replacing the CB-08 blade at the recommended interval restores the CT-50’s cleave quality to factory specification — protecting the quality of every splice and termination that follows.

Key Specifications

Compatible Cleaver Models

If you are unsure whether the CB-08 is compatible with your specific cleaver model, please contact us before ordering. For the Fujikura CT-08 cleaver, the correct blade is the CB-07 — see our AFL Fujikura CB-07 listing.

Why Cleaver Blade Replacement Matters for Splice Quality

The cleaver blade is the most critical consumable in a fiber optic cleaver. It scores the fiber surface to initiate a controlled fracture, producing a flat, perpendicular end-face. As the blade dulls over thousands of cleaves, cleave quality degrades in several ways:

• Increasing cleave angle: A dull blade produces higher cleave angles (measured in degrees from perpendicular). IEC standards require cleave angles below 0.5° for singlemode fusion splicing — a worn blade frequently exceeds this threshold, causing high splice loss
• Lip and hackle defects: Dull blades produce lip defects (a raised ridge on the fiber end-face) and hackle marks (surface roughness), both of which increase splice loss and connector insertion loss
• Fiber end-face chips: A worn blade may chip the fiber end-face rather than producing a clean fracture, causing splice failures and wasted fiber
• Increased fiber breakage: A dull blade requires more scoring force, increasing the risk of fiber breakage during the cleave cycle

Replacing the CB-08 blade at or before the 48,000-cleave mark restores the CT-50’s cleave quality and eliminates blade-related splice loss and failures.

Signs Your Fujikura CT-50 Cleaver Needs a New Blade

• The cleaver’s blade position indicator has reached the end of its rotation range (the CT-50 rotates the blade to present a fresh cutting edge at each position)
• Cleave angles are increasing — the splicer’s cleave angle check or an external cleave angle measurement tool shows angles above 0.5° consistently
• Splice loss is increasing on fiber types that previously spliced well, with no other obvious cause
• Lip or hackle defects are visible on fiber end-faces when inspected through the splicer’s camera or a fiber inspection microscope
• Fiber breakage during cleaving is occurring more frequently than expected

How to Replace the Blade on a Fujikura CT-50 Cleaver

1. Confirm blade replacement is needed — check the blade position indicator; if all positions are used, replacement is required
2. Open the cleaver and locate the blade holder assembly
3. Remove the worn CB-08 blade from the blade holder following the procedure in the CT-50 user manual
4. Install the new CB-08 blade in the blade holder, ensuring correct orientation and seating
5. Reset the blade position indicator to position 1 following the CT-50 user manual procedure
6. Perform test cleaves on scrap fiber to verify cleave quality before resuming production splicing or termination

Always follow the blade replacement procedure in your Fujikura CT-50 user manual. Incorrect blade installation can damage the cleaver or produce poor cleave quality.

CB-08 vs. CB-07: Which Fujikura Cleaver Blade Do You Need?

Always verify your cleaver model before ordering. The CT-50 and CT-08 are different cleaver models requiring different blades — the CB-08 and CB-07 are not interchangeable.

Ideal Applications

• FTTH / FTTx fiber splicing maintenance — restoring CT-50 cleave quality during high-volume FTTH construction to maintain consistent low-loss splices
• Fast connector field termination — clean cleave quality is the most critical factor in achieving low insertion loss at fast connector terminations
• Telecom OSP fiber splicing — aerial, underground, and in-building fiber splicing with Fujikura CT-50 cleavers
• Data center fiber infrastructure — precision cleaving for backbone and inter-rack fiber splicing and termination
• Preventive maintenance — scheduled blade replacement to maintain consistent cleave quality across field teams operating multiple CT-50 cleavers

Frequently Asked Questions

Q: What is the Fujikura CB-08?
A: The Fujikura CB-08 is the genuine OEM replacement blade for the Fujikura CT-50 (CT50) precision fiber optic cleaver. It is rated for 48,000 fiber cleaves and is the correct blade to restore CT-50 cleave quality when the existing blade becomes dull.

Q: Which cleaver is the CB-08 compatible with?
A: The CB-08 is compatible with the Fujikura CT-50 / CT50 fiber optic cleaver. It is not compatible with the Fujikura CT-08, which uses the CB-07 blade.

Q: How many cleaves does the CB-08 blade last?
A: The CB-08 blade is rated for 48,000 fiber cleaves. The Fujikura CT-50 rotates the blade to present a fresh cutting edge at each position — replace the blade when all positions have been used or when cleave quality degrades before reaching 48,000 cleaves.

Q: How do I know when to replace the CB-08 blade?
A: Replace the blade when the CT-50’s blade position indicator has reached the end of its rotation range, when cleave angles consistently exceed 0.5°, when lip or hackle defects appear on fiber end-faces, or when fiber breakage during cleaving increases.

Q: What is the difference between the CB-08 and CB-07?
A: The CB-08 is for the Fujikura CT-50 cleaver (48,000-cleave life). The CB-07 is for the Fujikura CT-08 cleaver (36,000-cleave life). They are not interchangeable — always verify your cleaver model before ordering.

Q: Is the CB-08 a genuine Fujikura / AFL part?
A: Yes. The CB-08 is a genuine Fujikura / AFL OEM replacement blade, ensuring correct blade geometry and cutting performance for the CT-50 cleaver.

Q: Why does cleave quality affect splice loss?
A: Fusion splicing requires a flat, perpendicular fiber end-face (cleave angle below 0.5° for singlemode fiber). A poor cleave — caused by a worn blade — produces a tilted or defective end-face that cannot be fully corrected by the splicer’s arc, resulting in higher splice loss. Maintaining good cleave quality with a sharp CB-08 blade is the most cost-effective way to achieve consistently low splice loss.

Q: For support or bulk orders?
A: Contact us at info@splicermarket.com for B2B pricing, volume orders, or technical support.

Package Contents

• Fujikura CB-08 Replacement Blade ×1