Helical Crane Duty Gear Boxes
We are offering Helical Crane Duty Gear Boxes.
Modular design principle
- Gear sizes, transmission ratios and main dimensions according to standard series of numbers, economic mass production, comprehensive maintenance of stocks, favorable delivery periods, easy servicing, low weight, compact design with high efficiency due to case-hardened steels of the highest strength, amply dimensioned bearings very smooth running with low noise due to ground helical gears and lapped high precision spiral bevel gears, housing of vibration-damping design of grey cast iron, they use of the most up-to-date machining equipment with constant production control by means of the most recent measuring machines.
- Venus Engineers: Series modular gear units are the result of decades of experience in design and production, taking advantage of the most recent relevant research in the field of gearing technology.
Technical Information
The power tables apply to normal conditions, i.e., drive by an electric motor, smooth operation, operation for eight hours per day. 2.5-fold starting torque relative to catalogue performance PN, 100% duration of operation, ambient temperature 200C. Power for intermediate speeds can be interpolated linearly. Higher drive speed than indicated and selected as finite-fatigue strength gears on request.
Reinforced bearings are optional for heavy external forces (e.g. output drive by pinion).
Efficiencies
- 99% for single reduction helical gear boxes.
- 98% for double reduction helical gear boxes.
- 97.5% for triple reduction helical gear boxes.
- 97% for triple reduction helical bevel gear boxes.
- 96.5% for quadruple reduction bevel helical gear boxes.
Dimensions/Weight/Oil
The figures are not strictly binding. We reserve the right to modify dimensions are average values. When filling gear unit with oil, note oil level markings.
Additional equipment
The housing can be made of nodular cast iron or of fabricated steel. Additional heating cartridges can be built into the housings. Special seals may be provided when the plant has to be set up in dusty or humid surrounding.
Mounting
Before the gear unit is set up the operating instructions should be studies and followed. Inclined positions for installation are possible on request. the plant user should provide protection covers on rotating parts.
Noise level
Allowable noise level is generally as mentioned below
- Gearbox with C.I. housing: 85 dB
- Gearbox with fabricated housing: 90 dB
- Gearbox with fan or built in pump will have 5 d B higher than (I) & (II).
Vibration level
Allowable vibration limits is generally as per VDI-2056 group 'T'
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