• sns01
  • sns02
  • Pinterest
  • linkedin1
English
Read More About bearing factory

Oct . 08, 2025 22:35 Back to list

CKZF-B Series Flywheel Backstop Clutch: High-Torque, Safe?


CKZF-B Series Flywheel Backstop Clutch: field notes, specs, and what users are really asking

If you’re sizing a conveyor backstop or retrofitting a bucket elevator, you’ve probably heard of the CKZF-B series flywheel backstop clutch. To be honest, the market has shifted toward non-contact overrunning designs because maintenance teams are tired of friction wear and heat haze on long runs. This model—built in Hebei at No. 3, Area B, Bearing Industry Mass Entrepreneurship Park, Beihuan Road, Linxi County, Xingtai City—lands squarely in that trend.

CKZF-B Series Flywheel Backstop Clutch: High-Torque, Safe?

What it is and why it matters

The phrase from the factory is simple: “CKZF-B Is A Bearing Non-Contact.” In practice, that means the sprag/freewheel elements lift off during overrunning, reducing drag and wear, then lock instantly when reverse rotation tries to kick in. Many customers say this solved the “hot housing” problem on incline conveyors. And yes, the CKZF-B series flywheel backstop clutch is aimed at bulk materials handling, gearboxes, and any drivetrain that can’t afford rollback.

Parameter Typical spec (≈) Notes
Bore size range Ø25–150 mm Custom bores on request
Rated backstop torque 200–6,000 N·m Real-world use may vary with duty cycle
Overrunning speed Up to 3,600 rpm Check thermal limits
Operating temperature -20 to 120 °C Seals and grease grade dependent
Materials 52100/GCr15 bearing steel Hardened raceways, ground
Service life (L10h) ≥20,000–40,000 h Per ISO 281, calculated

Manufacturing flow, briefly: forged bearing steel → CNC turning/grinding → heat treatment → precision lapping → balancing (G6.3 typical) → assembly in clean conditions → 100% torque verification. Testing often references ISO 281 (life), ISO 1940-1 (balance), ASTM E18 (hardness), and material to ASTM A485/GB/T 18254. I guess the headline here is consistency; the plant’s SPC charts looked tidy when I visited.

CKZF-B Series Flywheel Backstop Clutch: High-Torque, Safe?

Where it’s used

- Inclined belt conveyors and bucket elevators (CEMA/DIN-sized)
- Crushers and feeders needing anti-reverse protection
- Gearboxes on hoists, mixers, and crushers
Advantages users report: lower drag during overrunning, quick lock-up, compact footprint, and straightforward retrofit kits. The CKZF-B series flywheel backstop clutch is often paired with NLGI-2 grease or light oil bath depending on housing.

Vendor Certifications Customization Lead time (≈) Warranty Price level
BTZ Bearing (Hebei) ISO 9001 Bore/flange, seals, grease 3–5 weeks 12–18 months $
Generic Import A Factory CoC Limited 6–10 weeks 6–12 months $
Legacy EU Brand ISO 9001/14001 Broad options 8–14 weeks 18–24 months $$$
CKZF-B Series Flywheel Backstop Clutch: High-Torque, Safe?

Customization and a quick case study

Options: special bores/keys, non-standard flanges (B-type variants), IP upgrades, low-temp grease, food-grade lubrication, and corrosion-resistant coatings. In a Southeast Asia cement plant (≈800 t/h incline conveyor, 355 kW drive), a CKZF-B series flywheel backstop clutch retrofit reportedly cut unplanned stops by ~30%. Test notes from commissioning: backstop engagement CKZF-B Series Flywheel Backstop Clutch: High-Torque, Safe?

Standards, compliance, and what to check

- Design/life calcs per ISO 281 and failure modes per ISO 15243
- Conveyor sizing context: CEMA and DIN 22101 (for torque backstopping assumptions)
- Material and heat treatment to ASTM A485; hardness verified by ASTM E18
- Balance quality per ISO 1940-1 (G6.3 typical for flywheel-mounted units)
Before you sign off, confirm torque margin (≥2.0 safety factor is common), overrunning speed, and thermal path in the housing. The CKZF-B series flywheel backstop clutch tends to run cool thanks to its non-contact behavior, which, surprisingly, also helps grease life.

Origin: No. 3, Area B, Bearing Industry Mass Entrepreneurship Park, Beihuan Road, Linxi County, Xingtai City, Hebei Province.

Authoritative references

  1. ISO 281: Rolling bearings — Dynamic load ratings and rating life.
  2. CEMA: Belt Conveyors for Bulk Materials, 7th ed.
  3. ASTM A485: High Hardenability Antifriction Bearing Steel.
  4. ISO 1940-1: Mechanical vibration — Balance quality requirements for rotors.
  5. DIN 22101: Continuous conveyors — Belt conveyors for loose bulk materials.
Share


Next：

Latest news

If you are interested in our products, you can choose to leave your information here, and we will be in touch with you shortly.