Helical Gear Reducers

In-line Helical Gear Reducers

(Helical Gear Reducer German Model)

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moderna-motor - High Quality Gears and Motors

Advantages —

Design Concepts: The combination of standardization and modularization allows interchangeability with international leading brands, while keeping structure rigidity and compactness.
Energy Efficiency: Leveraging the advantage of high accuracy of helical gears, the reducers perform at 90% efficiency with higher stability and lower noise level.
Ratios Coverage: The ratio ranges between 1/1.3 - 1/27788, providing wide range of ratio accommodation. with 1-3 stages of reduction.
Loading Capacity: Available with power ranges from 1/4HP up to 150HP, depending on different requirements and applications.
Tensile Strength: Pinion and gears are made with 20CrMo alloy steel plus carburizing heat treatment to enhance performance; the input pinion is equipped with double bearing support to provide stability at high speed.
Complete Series: Vertical and horizontal mounting along various input mechanism ensure our products meet wide range of applications.
Installation Flexibility: All models are designed for a choice of mounting position (M1~M6) specified by customers.
Appearance Aesthetics: The reducers are designed with modern exterior while maintaining high rigidity.

Operation Manual

This operation manual is to help you install and operate speed reducer correctly. To avoid damages to the speed reducers, proper installation and operation is very crucial. This manual also includes official recommendations on maintenance for an extended lifespan of speed reducers.

MODERNA speed reducer passed strict inspection and testing before being properly packaged for shipping. Upon receipt of the speed reducer, please check for any shortage or damage of parts during transit.Please be sure to contact MODERNA for identification of responsible carrier and made record of the issue. We are committed to excellence in quality and devoted to solving problems for our clients.

I. Installation

II. Lubrication

III. Storage

IV. Attachments the parts on reducer's shaft

V. Installation & Operation

I. Installation —

Flexible couplings are preferred when input shaft connects directly to the motor; gear couplings are preferred on the output shaft's connection to the application.
Install on a stable base with good air ventilation; the accessibility of oil filling / draining should be considered.
The input shaft of the reducer and the motor shaft should be in alignment within the tolerance allowance.
After installation, please turn the input shaft manually first to check for any locking.
No-load running test should be performed first; any abnormality should be corrected prior to regular operation.

II. Lubrication —

The first oil change should be performed after 500 hrs of operation; subsequent oil change is needed every 2,500 hrs of operation. Nevertheless, a regular check on oil level and conditions are recommended.
Please fill only with compatible specifications of oil and do not mix oil of different specifications in a single unit.
The interior of the reducer should be flushed and drained before filling with fresh oil.
Please shut the reducer immediately for inspection if the temperature rises above so·c or any abnormal noise occurred. Restart only after the issues identified and cleared.
Lubricant recommendation: MOBIL Gear 632, SHELL Omala 320, MOBIL Mobilube HDS0W-90, SHELL Spirax E.P 90.
Unless specified otherwise by the customer, every MODERNA speed reducer is supplied with appropriate amount of lubrication according to different installation position before shipping. If customer prefers to fill in the lubricant oil post shipment, please follow the instruction section of this catalog.

Ill. Storage —

1. If the speed reducer is not for immediate installation, please keep the unit away from humidity and heat sources. After extended period of storage, please contact our service personnel for instruction on restoring the original performance prior to installation.

IV. Attachments the parts on reducer's shaft —

Notice: Avoid heavy impact on shafts! It may cause bearing damages and undermines bearing performances. If bearings are to be replaced, we recommend heating method, which heats the bearing above 80°C , that would allow a clear fit on the shafts and reduce the damage to the bearing. For the tolerance of shaft's diameter, please refer to the specification in catalog.
While installing the coupling, make sure to check the alignment of coupling and shaft of speed reducer properly to eliminate the damage on bearings and reduce to vibration frequency and abnormal wear.
To avoid overload on the bearings of output shaft, please refer to the OHL (overhung loading) in catalog. For exceeding axial load, please contact our service engineer for consultation.
The actual application of following factors such as input and output speed, direction of rotation, installation site and over axial and radial loading should be carefully examined.

V. Installation & Operation —

The underlying factors should be taken into consideration:
* Ambient temperature below 40°C
* Location with good air ventilation
* Proper positions for oil plug and drain plug
* Sufficient space for periodical inspection, maintenance, and replacement
It is necessary for the unit to be installed on a flat, stable and rigid base for accurate alignment to prevent damages to the reducer's housing.
The suggested tolerance of flatness on base:
* For size 77 or smaller:< 0.1mm/m
* For size 87 or bigger:< 0.2mm/m
To avoid the lubricant splash out during the transportation, breather plug with red pin inserted into air breathing hole. Please remove the red pin before start-up.
Before installation, please check the input horsepower and ratio to be the same as the punched name plate of reducer.

VI. Caution —

Caution! The power should be turned off before removal or replacement of the reducer.

Oil level and quality lubricant is key point of daily maintenance. Please refer to our suggestion to change the lubricant periodically according to operation frequency site situation.
Check the alignment of coupling, the tightness of chain. and nuts and keep the reducer away from excessive dust and grease externally .