In the competitive stationery market, consistency is king. Whether you manufacture standard pencil sharpeners or heavy-duty electric models, proving compliance with QB/T 1337-2010 is critical for passing third-party inspections (like SGS or Intertek). The Lituo LT-WJB21 Pencil Sharpener Shaving Capacity Tester automates the entire testing process, replacing subjective manual checks with precise, repeatable data.
Why Choose the LT-WJB21? (Feature-Benefit Breakdown)
Unlike basic testers that only offer fixed speeds, the LT-WJB21 is engineered for both R&D and Quality Control. Here is why it stands out:
Precise Load Control: Utilizes a pneumatic system to apply a consistent 10N axial feed force. This eliminates the variability of manual testing, ensuring your results strictly adhere to Clause 6.1 of the QB/T 1337 standard.
Variable Speed Logic: Features a 0–200 rpm adjustable speed range (standard test at 60 rpm). While competitors lock you into a single speed, our dual closed-loop motor allows you to identify the optimal cutting efficiency of your blades during R&D.
Digital Traceability: Equipped with a 7-inch PLC touchscreen and USB data export. In audits, having a digital log of "6 consecutive pencils" is far more convincing than a handwritten report.
Universal Compatibility: The custom stainless-steel fixture securely holds various pencil diameters and sharpener types, from standard pocket sharpeners to large-volume desktop models.
Technical Specifications
Parameter | Specification |
|---|
Model | LT-WJB21 |
Power Supply | AC 220V, 50Hz |
Control System | Imported PLC + 7" Color Touch Screen |
Cutting Speed | 0–200 rpm (Adjustable) |
Motor Type | Brushless DC Motor (Dual Closed-Loop Control) |
Feed Force | Digital Display, Adjustable (Standard: 10N) |
Air Pressure | 0–5 kgf (Adjustable) |
Data Interface | USB Export (PC Analysis Supported) |
Compliance | QB/T 1337-2010, QB/T 2774-2006 |
Fixture Material | Stainless Steel |
Understanding the QB/T 1337-2010 Test Standard
To pass the "Shaving Capacity" test according to Chinese National Standards, your product must meet these four strict criteria during a continuous run of 6 pencils:
1. Feed Force: A constant 10N axial load.
2. Speed: Rotation speed not exceeding 60 rpm.
3. Shaving Integrity: Wood shavings must be continuous ("in one piece"), not fragmented.
4. Thickness Limit: After the 6th pencil, the maximum thickness of the wood shaving must be ≤ 0.4mm (measured by a 0.02mm vernier caliper).
5. Core Breaks: No more than 2 instances of lead breakage are permitted.
The LT-WJB21 focuses specifically on the "Shaving Capacity" of sharpeners. If you require a comprehensive quality control solution covering manual sharpeners and pencils, we recommend pairing this unit with:
Frequently Asked Questions (FAQ)
Q: Can this machine test both manual and electric pencil sharpeners?
A: Yes. The LT-WJB21 is designed primarily for manual insertion testing (simulating human use). For electric units, the focus is on the blade's performance under load. We can customize fixtures based on your specific product dimensions.
Q: What kind of calibration does the LT-WJB21 require?
A: The machine features digital force and speed displays. We recommend annual calibration of the force sensor and tachometer to ensure compliance with inspection body requirements (e.g., SGS, BV).
Q: What is the lead time for the LT-WJB21?
A: Standard production time is 20–30 days upon receipt of deposit and final technical confirmation. Please contact our sales team for current stock availability.
Request a Quote or Demo
Stop failing audits due to inconsistent manual testing. Upgrade your QC process with the precision of the LT-WJB21.
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