Vertikálny cyklo prevodový stupeň BLD pre miešacie a miešacie zariadenia

Prehľad produktu

Ten/Tá/To BLD vertical cyclo gear reducer is a flange-mounted unit purpose-built for top-entry mixing, agitation, and stirring applications. Unlike horizontal reducers that require additional brackets or bevel gear turns to drive a vertical shaft, the BLD mounts directly on top of tanks and vessels with its output shaft pointing downward, creating a clean and compact drive arrangement that eliminates unnecessary mechanical complexity.

If you currently operate Sumitomo CHHJ, SM-Cyclo vertical, or equivalent models on your mixing lines, the BLD serves as a dimensional replacement for these units. We reference these brand names purely to help buyers identify the correct cross-reference frame size; Korea Ever-Power does not manufacture or sell products under any other brand name.

   

This reducer handles input power from 0.25 kW to 55 kW and delivers output torque between 48.3 N.m and 29,400 N.m. The available ratio range spans 9:1 for single-stage models through 1849:1 in double-stage configurations, which means the BLD cycloidal gear reducer for mixing equipment covers everything from fast blending at 280 rpm output speed down to slow heavy-paste mixing at 11 rpm or below. The input shaft accepts standard IEC motor flanges, keyed solid shaft connections, or direct motor coupling depending on the configuration ordered.

Industries that rely on this particular model include chemical processing, pharmaceutical manufacturing, wastewater treatment, food and beverage production, paint and coating blending, cement slurry mixing, and biodiesel production. Across Korean industrial regions from Ulsan petrochemical complexes to Chungnam food processing clusters, the BLD has become a dependable standard for vertical agitator drives. It belongs to the broader cyklo reduktor product line offered by Korea Ever-Power.

Technické špecifikácie

The specification table below summarizes the principal parameters for the BLD series. When matching this unit to an agitator shaft, confirm that the output torque rating exceeds your calculated mixing torque by a safety factor of at least 1.5, and verify the output shaft diameter and keyway match your existing coupling or direct shaft connection.

Design and Mounting Drawings

Where the BLD Cycloidal Reducer Solves Real Problems

Ten/Tá/To BLD vertical cycloidal speed reducer was not designed as a general-purpose unit that happens to work vertically. It was engineered from the ground up for applications where the motor sits on top and the output shaft drives downward into a process vessel. Here are the specific industries and situations where this unit delivers the most value.

Chemical Reactor Agitation

Chemical reactors often require slow, consistent stirring at 15 to 60 rpm to maintain uniform temperature distribution and prevent settling. The BLD's double-stage ratio options (up to 1849:1) allow extremely slow output speeds without the motor itself running at low frequency. Because the cycloidal disc uses rolling contact rather than sliding contact, the BLD cyclo gear reducer generates less heat than worm alternatives. This matters in chemical environments where excess heat near the reactor top flange can affect seal integrity or product temperature. Several petrochemical facilities in the Ulsan and Yeosu industrial zones have standardized on BLD units for their polymerization reactor drives.

Wastewater Treatment Flocculators

Municipal and industrial water treatment plants use slow-speed paddle mixers to distribute flocculation chemicals evenly through settling tanks. These mixers typically run at 10 to 30 rpm and must operate 24 hours a day, 365 days a year. The BLD vertical cyclo reducer achieves high efficiency (above 90% for single-stage models) means less electricity consumption over continuous duty cycles. The sealed vertical shaft exit also prevents lubricant leaks from dripping into the water below, which is a real concern with aging worm gear units that develop shaft seal wear over time. Many plants that previously relied on závitovkové reduktory have reported fewer leak incidents after switching to the BLD.

Food and Beverage Blending

Dairy processing, sauce production, and brewing operations use top-entry agitators to blend ingredients at controlled speeds. The BLD cycloidal reducer with its compact flange-mount design keeps the drive assembly tight against the vessel lid, which simplifies sanitary enclosure design and wash-down procedures. For food-grade environments, the unit can be supplied with food-safe synthetic lubricant and stainless steel output shaft options.

Cyclo Gear Reducer vs Planetary Gearbox: Which Fits Your Mixing Application?

Both cycloidal and planetary reducers belong to the "epicyclic" family of gear mechanisms, and both offer high torque density in compact housings. However, they serve different performance envelopes. Planetary gearboxes excel in precision motion control where low backlash is critical. Cycloidal gear reducers excel in heavy industrial drives where shock absorption, overload tolerance, and long maintenance intervals take priority over backlash specification.

For mixing and agitation applications, the cycloidal type wins on three critical fronts. First, the ratio range: a single BLD stage can deliver ratios up to 87:1, while a planetary unit needs three or even four stages to reach the same ratio, which drives up cost and reduces efficiency at each stage. Second, shock tolerance: when an agitator paddle hits a solid mass in the tank (common in chemical and wastewater processing), the cycloidal disc absorbs the impact across multiple contact points. A planetary gear train concentrates that same shock onto just a few gear teeth. Third, long-term cost: cycloidal internals experience rolling fatigue rather than tooth surface pitting, so the maintenance cycle is longer and less expensive.

Planetary gearboxes remain the better choice for servo-driven positioning systems, robotic joints, and machine tool spindle drives where angular accuracy and minimal backlash are non-negotiable requirements. For everything else in the industrial mixing and process equipment category, the BLD vertical cyclo gear reducer offers a more practical and cost-effective solution. Detailed specifications for planétové prevodovky are available for customers who need servo-grade precision. The BLD is part of a broader product family that includes horizontal, double-stage, and motor-integrated variants.

Materials and Manufacturing Quality

The performance claims above depend entirely on the quality of materials and machining. Here is what goes into every BLD cyclo gear reducer unit we ship:

✔ Cycloidal Disc: GCr15 chromium bearing steel, vacuum-quenched to HRC 58-62 surface hardness. This is the same steel grade used in high-load rolling element bearings. The hardening process creates a wear-resistant surface layer while maintaining a tough core that resists crack propagation under impact loading.

✔ Pin Ring (Needle Teeth): Alloy steel pins, case-hardened and precision-ground to maintain consistent contact geometry across all teeth simultaneously. Surface roughness is held below Ra 0.8 to minimize friction at each rolling contact point.

✔ Bývanie: HT200 cast iron, machined on CNC boring mills to ensure bore concentricity within 0.02 mm. The casting is stress-relieved before machining to prevent warping over the reducer's service life.

✔ Bearings: Tapered roller bearings on the output shaft (to handle combined radial and thrust loads from agitator weight) and deep groove ball bearings on the input shaft. Standard bearing brands include domestic Chinese manufacturers certified to ISO 492 tolerance class P5.

✔ Seals: Double-lip TC oil seals with spring-loaded contact to maintain seal pressure as the lip wears. For dusty or high-humidity environments, an additional V-ring seal can be specified on the output shaft.

Maintenance Schedule and Troubleshooting

One of the practical advantages plant operators notice after switching to the BLD vertical cycloidal reducer is the reduction in scheduled maintenance tasks compared to worm or helical alternatives. Here is the recommended maintenance routine and a quick reference for common operational issues.

Lubrication Protocol

1. Fill with 40# or 50# mechanical oil at installation. For extended drain intervals and higher protection, use 70# or 90# extreme pressure gear oil.
2. Drain and replace oil after the first 100 running hours. This initial change flushes out metal particles from the break-in period.
3. After the initial change, replace oil every 6 months under a standard 8-hour daily work cycle. In heavier duty environments (continuous 24/7 operation), change oil every 3 to 4 months.
4. For vertical installations, ensure the oil pump system is functioning correctly before starting. Loss of oil circulation in a vertical unit can cause bearing damage within minutes.
5. Check the oil level through the sight glass weekly. Top up as needed through the breather cap on the upper housing.

Common Issues and Solutions

Unusual vibration typically indicates either a misalignment between the motor and reducer input shaft, or a worn eccentric bearing. Check coupling alignment first (should be within 0.05 mm radial and 0.1 mm axial), and if alignment is correct, schedule a bearing inspection. If the output connects through a hnací hriadeľ assembly, also check the universal joint alignment as misalignment can transmit vibration back into the reducer. Oil leakage at the output shaft seal usually means the seal lip has worn past its service limit; replace with a matched double-lip TC seal. Excessive operating temperature (above 85 degrees C housing surface) may indicate insufficient oil level, wrong oil viscosity for ambient conditions, or continuous operation above rated load. Verify oil level, ambient temperature, and actual load against the nameplate rating.

Súvisiace a kompatibilné produkty

A complete agitator drive system involves more than just the reducer. Here are the products that typically pair with the BLD vertical unit in a mixing installation:

◆ Power input: IEC standard three-phase motors and flexible couplings for vibration isolation

◆ Output transmission: Drive shafts and universal joints for connecting to agitator impellers that require angular offset

◆ Chain and sprocket kits: Sprockets and chains for secondary output connections on auxiliary mixing systems

◆ Combined high-ratio drives: Pair the BLD with a planetary gearbox as a pre-stage to achieve ratios above 1849:1 for ultra-low speed applications

◆ Alternative reducer types: For applications requiring self-locking (vertical hoist drives), consider pairing with a worm gear reducer

Contact our team for assistance in selecting the right combination of components. We provide complete drive system packages with matched motor, coupling, reducer, and shaft assembly.

Často kladené otázky

Can the BLD vertical cyclo gear reducer for mixing equipment run continuously in a 24/7 wastewater treatment plant?

Yes. The BLD is rated for continuous duty (S1 according to IEC standards). Many municipal treatment plants in Korea run these units around the clock on flocculator and digester drives. With the recommended oil change schedule, continuous operation within rated load poses no issues.

How does the BLD vertical cycloidal reducer compare to a planetary gearbox for an agitator?

For agitator drives, the BLD offers better shock load handling (500% vs 150-200%), wider single-stage ratio range (up to 87:1 vs 10:1), and lower cost per unit of output torque. Planetary gearboxes are better suited for precision positioning applications where backlash matters. For mixing, the BLD is the more practical choice.

What oil should I use for vertical installation of the BLD?

Use 70# or 90# extreme pressure gear oil for vertical installations. The oil pump system inside the vertical BLD circulates lubricant to the upper bearings; EP-grade oil provides better film strength at the bearing contacts compared to standard mechanical oil.

Is a separate brake needed if power is cut while the agitator is running?

The cycloidal mechanism does not self-lock. If the agitator must stop immediately and hold position when power is removed (for example, on heavy paste mixing where the impeller would reverse under load weight), install an electromagnetic brake on the motor shaft. For low-viscosity liquid mixing where slow coast-down is acceptable, no brake is needed.

Can I mount the BLD at an angle other than perfectly vertical?

The BLD is designed for vertical shaft-down orientation. Tilting up to 15 degrees from vertical is acceptable with standard lubrication. Beyond that, oil distribution to bearings may become uneven. For angled agitator setups, contact our engineering team for a modified lubrication arrangement or consider the horizontal BWD model with a right-angle coupling adapter.

What is the noise level of the BLD series under typical operating conditions?

At rated load and speed, the BLD typically generates between 60 and 72 dB(A) measured at 1 meter from the housing surface. This is noticeably quieter than equivalent-ratio worm reducers, which typically register 5 to 10 dB(A) higher due to sliding friction noise from the bronze gear contact.

How do I order a replacement BLD if I currently use a Sumitomo vertical unit?

Send us the Sumitomo model number and frame size from your existing nameplate. Our engineering team will identify the matching BLD configuration with identical mounting bolt pattern, shaft dimensions, and ratio. Typical cross-reference turnaround is within one business day. Email us directly for quotation. If your agitator system includes a secondary ozubené koleso a reťaz drive on the output, include the chain pitch and sprocket tooth count in your inquiry for a complete package quote.

Čo hovoria naši zákazníci

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Choi Min-jun, Process Engineer, Daejeon Pharmaceutical (February 2025)

"We installed BLD units with 43:1 ratio on three reactor agitators handling temperature-sensitive API blending. The lower heat generation compared to our previous worm drives was exactly what we needed. Six months in, the housing surface stays below 50 degrees even on 12-hour batch runs. Very satisfied with this purchase."

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Yamamoto Yuki, Purchasing Manager, Kobe Water Engineering (January 2025)

"Bought 8 units for flocculator drives at our new treatment plant. The price per unit was about 35% less than the Japanese brand we normally specify, and the build quality seems equivalent. Delivery to Kobe port was 11 days. The only suggestion I have is to include English and Japanese language maintenance stickers on the housing."

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Song Hye-jin, Operations Director, Gyeonggi Food Tech (December 2024)

"We run BLD reducers on sauce blending tanks, 18 hours per day, 6 days a week. After one year of operation, we have had zero failures and zero unplanned downtime on these units. The oil stays remarkably clean between changes. Our maintenance team is genuinely impressed with how little attention these reducers need compared to the old gearboxes."

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Pham Duc Anh, Technical Director, Hanoi Chemical Processing (March 2025)

"The custom output shaft modification we requested was handled professionally. They machined a 60mm shaft with a special keyway for our existing coupling, and the fit was perfect on first installation. Communication in English was smooth throughout the process."

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Jung Woo-seok, Maintenance Lead, Chungnam Cement Works (November 2024)

"We switched from planetary gearboxes to BLD cyclo reducers on our slurry mixers. The planetary units kept developing backlash issues after 6-8 months in the high-vibration environment. The BLD has been running for 10 months now with no backlash degradation. The shock absorption during startup loads is noticeably better too."

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Watanabe Keiko, Equipment Buyer, Yokohama Coating Systems (October 2024)

"Quick response from the sales team. Got a quote within 2 hours and the reducer was shipped the same week. Good value for paint mixing applications."

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Baek Seung-ho, Chief Engineer, Ulsan Petrochemical Facility (January 2025)

"We needed BLD units with ATEX-compatible sealing for our Zone 2 classified area. Ever-Power provided enhanced shaft seals and explosion-proof motor coupling documentation within two weeks. The units have been in service for three months in our polymer reactor section. Operating temperature, vibration levels, and noise are all within our plant safety thresholds. We plan to order more units for the expansion project in Q3. Found everything we needed at cyklogearreducer.top."

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