XW BW serija cikloidnih mjenjača – jednostepeni horizontalni reduktor sa osovinicom i montažom na stopalo

Pregled proizvoda

The XW BW series cycloidal gearbox is the foundational single-stage horizontal foot-mounted reducer in the cyclo gear product family. Where the BWD and XWD designations indicate motor-integrated configurations, the XW and BW models are standalone reducer heads: the XW variant accepts motor input through a flange interface, and the BW variant accepts input through a keyed solid shaft. Both share identical internal cycloidal pin wheel mechanisms, the same cast iron housing construction, and the same output shaft dimensions for any given frame size.

The XW BW horizontal foot-mounted cyclo gear reducer covers ratios from 9:1 to 87:1 in single-stage configuration and handles input power up to 55 kW. This is the workhorse model that Korean and Asian plants choose for belt conveyor head drives, ventilation fan systems, pump drives, material handling equipment, and dozens of other applications where a simple, reliable speed reduction between a standard motor and the driven equipment is the primary requirement.

The cycloidal pin wheel reducer operates on a fundamentally different contact principle from conventional gear reducers. Instead of involute teeth sliding past each other, a cycloidal disc rolls against a ring of hardened steel pins. This rolling contact generates less friction heat, distributes load across many contact points simultaneously, and tolerates shock overloads up to 500% of rated torque without permanent damage to the internal components. The practical result for plant operators: higher efficiency than pužni reduktori, better shock resistance than helical gearboxes, and longer intervals between maintenance. Explore the complete product lineup in our ciklo reduktor catalog.

Dimensional Drawings and Specifications

The XW BW cycloidal gearbox is offered in two mounting sub-variants (XW with flange input, BW with shaft input) that share the same overall housing dimensions and output shaft geometry for each frame size. The drawings below show both configurations and their respective dimensional envelopes.

XW and BW Combined Outline Drawing

XW Series (Flange Input) Detailed Dimensions

BW Series (Shaft Input) Detailed Dimensions

All XW BW cyclo gear reducer output shafts are machined to h6 tolerance. For smaller frame sizes (B0/X2 and B1/X3), the units ship pre-greased and require no additional lubrication before first operation. Larger frames (B2/X4 and above) ship without oil and must be filled with the specified lubricant grade before starting. Refer to the lubrication section of the installation manual for the correct oil quantity per frame size.

Speed Reducer Technology Comparison: Where Does the Cycloidal Type Fit?

Plant engineers choosing a speed reducer for a new installation or a replacement project face five main technology categories. Each has its own operating characteristics, strengths, and trade-offs. The table below places the XW BW cycloidal gearbox in context alongside the four other common industrial reducer types, making it easier to identify which technology fits each application profile.

The XW BW cycloidal pin wheel reducer stands out on two parameters that matter most in everyday industrial service: shock overload capacity and maintenance demand. No other technology listed above absorbs 500% momentary torque spikes the way a cycloidal disc distributes the load across its full pin ring. And no other technology requires as little maintenance, because the rolling contact mechanism generates negligible wear debris compared to sliding-contact gear teeth or worm threads.

Helical gearboxes edge ahead on raw efficiency (92-96% vs 85-92%) and are the better option when energy cost is the dominant selection criterion and shock loads are absent. Planetarni mjenjači are the right choice for servo-driven positioning systems where backlash specification drives the design. Bevel units serve applications needing a physical right-angle turn in the power path. And worm reducers retain their niche in applications where self-locking under gravity load is a non-negotiable requirement. For everything else in the general industrial category, the XW BW cycloidal gearbox offers the most balanced combination of performance, durability, and cost.

Working Principle and Internal Structure

The XW BW cyclo gear reducer uses a cycloidal pin gear meshing planetary transmission principle. The input shaft carries a 180-degree offset eccentric sleeve. Two roller bearings are installed on this sleeve, forming the H-mechanism that drives the cycloidal discs. The center holes of the two cycloidal gears form the raceway of the eccentric bearing assembly. As the input shaft rotates, the eccentric sleeve causes the cycloidal discs to orbit inside a fixed ring of needle-like pins mounted to the housing inner wall, producing the meshing contact that generates speed reduction.

Because the cycloidal disc has one fewer lobe than the number of pins in the ring, each revolution of the input shaft advances the disc by one pin position. This small angular advance per input revolution is what creates the high reduction ratio in a single stage. Two cycloidal discs are mounted 180 degrees apart on the eccentric to balance dynamic forces and reduce vibration. The output shaft connects to the discs through a set of output pins fitted into holes on the disc face, converting the orbital wobbling motion of the discs into concentric shaft rotation. The internal meshing design with a tooth difference of one produces a smooth, continuous power transfer with no discontinuities or dead zones in the torque output.

Build Quality and Feature Details

Every component of the XW BW cycloidal gearbox is manufactured to tight industrial standards. The following feature images show the specific construction details that distinguish the Ever-Power build quality.

Typical Application Scenarios for the XW BW Cycloidal Reducer

The XW BW series cyclo gear reducer finds its home in applications where the driven equipment needs reliable, moderate-ratio speed reduction with tolerance for real-world operating conditions that include occasional overloads, dust, temperature swings, and imperfect maintenance schedules. Here are the primary application categories.

Conveyor Systems and Material Handling

Belt conveyors, chain conveyors, and screw conveyors across mining, cement, food processing, and logistics industries represent the largest single application category for the XW BW horizontal foot-mounted cycloidal gearbox. The high shock tolerance is particularly valuable for mining conveyors where large rocks occasionally jam the belt, creating sudden torque spikes that would damage a helical gearbox's teeth. For chain-driven conveyors, the XW BW output shaft connects through matched lančanici i lanci sized to the reducer's torque output.

Fan and Blower Drives

Industrial ventilation fans, cooling tower fans, and process air blowers benefit from the cycloidal pin wheel reducer's low vibration output. Fan drives are often located in areas where noise and vibration must be minimized, such as near office buildings or residential zones adjacent to industrial facilities. The XW BW's broadband noise signature blends into ambient conditions more readily than the tonal whine of helical alternatives.

Pump Drives and Water Treatment

Centrifugal pumps, positive displacement pumps, and dosing systems in water and wastewater treatment plants use the XW BW for speed reduction between the motor and pump input shaft. The XW BW cyclo gear reducer delivers consistent rotational output that translates to stable flow rates. For dosing applications where flow accuracy matters, the near-constant velocity output of the cycloidal mechanism avoids the micro-pulsation that some gear types introduce at very low speeds.

Povezani i kompatibilni proizvodi

The XW BW cycloidal gearbox is the reducer component within a complete drive train. Korea Ever-Power supplies all the companion products needed for a turnkey installation:

Motor-side: IEC standard three-phase motors, flexible jaw couplings, and motor adapter flanges for the XW variant. For the BW shaft-input variant, belt pulleys or direct coupling to an existing motor shaft.

Output-side: Keyed shaft couplings, sprocket and chain assemblies, belt pulley drives, and pogonska vratila with universal joints for angular connections to the driven equipment.

Extended ratio needs: For ratios above 87:1, upgrade to a double-stage BWED/XWED model, or connect the XW BW in series with a planetary pre-stage. For details and pricing, visit cyclogearreducer.top or contact our engineering team directly.

Često postavljana pitanja

What is the difference between the XW and BW model designations in this cycloidal gearbox series?

The XW accepts motor input through a flange-style connection (the motor bolts to the reducer input flange). The BW accepts input through a keyed solid shaft (the motor connects via a coupling to the BW input shaft). Internally, both are identical. Choose based on your preferred motor attachment method.

Do the smaller XW BW frames (B0/X2, B1/X3) need oil filling before first use?

No. B0/X2 and B1/X3 frame sizes ship pre-greased and are ready to operate directly from the packaging. All larger frames (B2/X4 and above) must be filled with lubricant before starting. The type and quantity are specified on the nameplate and in the installation manual.

Can the XW BW cycloidal gearbox handle frequent start-stop operation?

Yes. For applications with more than 20 starts per hour, apply a service factor of 1.3 to 1.5 when selecting the frame size. The cycloidal disc's multi-tooth contact absorbs starting torque peaks well, but the eccentric bearing experiences higher cumulative loading under frequent cycling, so the frame should be up-sized to compensate.

Which speed reducer type is most efficient for a conveyor running at 30 rpm from a 1500 rpm motor?

At a 50:1 ratio, a two-stage helical gearbox offers approximately 94% efficiency versus 87% for the XW BW cycloidal. However, the cycloidal unit handles shock loads much better and requires less maintenance over its lifetime. For a cost-optimized decision, factor in the full operating cost (energy + maintenance + downtime risk) rather than efficiency alone.

Is it possible to operate the XW BW cyclo gear reducer in both forward and reverse directions?

Yes. The internal mechanism is symmetrical and operates identically in both rotation directions. No internal modification or configuration change is needed for bidirectional operation. This is standard across all XW and BW frame sizes.

Recenzije kupaca

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Bae Won-seok, Maintenance Lead, Asan Logistics Hub (January 2025)

"We have 22 XW series reducers running on parcel sorting conveyors across our distribution center. The oldest units are now 3 years old and have needed nothing beyond oil changes. Before switching to cycloidal, we were replacing helical gearbox bearings about once a year on the high-traffic lines. The total maintenance cost reduction has been significant."

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Kobayashi Yuto, Equipment Engineer, Saitama Water Utility (February 2025)

"BW series on our raw water intake pump drives. Clean operation, low noise at the pump house which is near residential housing. The pre-greased small frames (B1 size) were particularly convenient, just bolt on and run. Eight months in service, no issues."

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Jung Ha-neul, Plant Electrician, Gimhae Electronics Manufacturing (March 2025)

"The XW reducers on our cleanroom ventilation fan drives produce noticeably less vibration than the previous gear motors. Our vibration monitoring system confirmed a 40% reduction in peak amplitude at the fan bearing locations. That translates directly to extended fan bearing life."

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Pham Quoc Bao, Mechanical Supervisor, Dong Nai Cement, Vietnam (December 2024)

"BW series Frame B4 on two clinker conveyor head drives. The conveyors handle 300 tons per hour of hot clinker with frequent large lumps causing torque spikes. The cycloidal reducers have absorbed every spike without complaint for over 10 months now. The old worm units used to trip the motor overload relay regularly on the same loads."

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Shin Hye-rin, Technical Procurement, Changwon Machine Tool Co. (November 2024)

"Good quality standard cycloidal reducers at a competitive price. We use XW frames on several of our machine tool coolant pump drives and chip conveyor drives. Consistent performance across units, and the dimensional accuracy has been reliable for direct mounting without shimming."

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