Bevel gearboxes and flanged bevel gearboxes for indicators

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66/4UC

Continuous use gearbox

66/4UC

Continuous use gearbox

• Ideal for continuous motorized use at maximum efficiency, without any loss of power.
• The component configuration ensures handling of constant loads with smooth, and uninterrupted operation.
• Oil bath lubrication for speeds above 200 rpm; grease lubrication for speeds below 200 rpm.
• Available transmission ratios: 1:1 - 1:2 - 2:1 ( available in versions «A» - «B» - «C»).
• Aluminium case, anodised; AISI 303 stainless steel shafts (standard).
• Max. transmissibile torque 8 Nm.
• Models:
- Version «A» with 2 outputs; weight 270 g.
- Version «B» with 3 outputs; weight 290 g.
- Version «C» (opposite rotation) with 3 ouputs; weight 310 g.
- Version «D» with 3 outputs, 2 through hollow shafts; weight 260 g.
• Standard shafts: M = male Ø8CH2 / F = female Ø8CH2 (Tab. 9).
Available on request:
▪ Shafts: M = male Ø10CH3 - Ø14CH5.
▪ Shafts: F = female Ø10CH3 - Ø14CH5.
▪ Custom configurations

Photogallery

APPLICATION EXAMPLES

VERSION WITH DIMENSION DRAWINGS

Available shafts

male shaft M

female shaft F

through-hollow female shaft F

Version «A» M-M

Version «A» M-F

Version «A» F-M

Version «A» F-F

Version «B» M-M-M

Version «B» F-M-M

Version «C» M-M-M

Version «C» M-F-F

Version «C» F-M-M

Version «C» F-F-F

Version «D» F-F-F

Version «D» M-F-F

CONFIGURATION AND DIRECTION OF ROTATION

Tab.1

AVAILABLE VERSIONS
⟪A⟫	⟪B⟫

2 outputs, same rotation direction	3 outputs, same rotation direction

⟪C⟫	⟪D⟫

3 outputs, 1 with opposite rotation directions	3 outputs, 2 with through hollow shafts, same rotation direction
The direction of rotation depends from the configuration and from the mounting positioning, see Tab. 4.

OUTPUT SHAFT IDENTIFICATION

Tab.2

AVAILABLE OUTPUT SHAFTS
male = M	female blind = F	through female = F

Example with 2 outputs	Example with 3 outputs

REFERENCE RULES
Shaft 1 is always shown on the side opposite the M_1 fixing bores and serves as the reference for determining:
● the configuration
● the direction of rotation
● the gear ratio
By convention, Shaft 1is shown rotating clockwise. The others shaft are defined following the clockwise direction.

AVAILABLE TRANSMISSION RATIOS

Tab.3

The ratio is determined by the shaft1always shown on the opposite side of the fixing bores M_1.
Ratio 1/1	Ratio 1/2	Ratio 2/1

Example	Example	Example
Shaft 1 = 10 rpm	Shaft 1 = 10 rpm	Shaft 1 = 5 rpm
Shafts 2-3 = 10 rpm	Shafts 2-3 = 5 rpm	Shafts 2-3 = 10 rpm
		not available in version D

M_ FIXING POSITIONS

Tab.4

Shaft 1 remains the reference and is conventionally shown rotating clockwise; the housing is rotated by 90° from the previous position.

M_1 = top view. 0°			M_2 = right side view 90°
		+90° → DX
same rotation	opposite rotation		same rotation	opposite rotation
↑ +90°			+90° ↓
M_3 = left side view 270°			M_4 = bottom view 180°
		+90° ← SX
same rotation	opposite rotation		same rotation	opposite rotation

PHASE BETWEEN KEYS
ratio	degrees °
1/1	± 7,2°
1/2	± 6,9°
2/1	± 6,9°
a. keyway b. key
The keyways on the shafts are never perfectly in phase, except for shaft 2 and 3 in versions «B» and «D».

GUIDELINES

Selection of the gearbox

For correct sizing it is necessary to identify: the power, the torque and the rotation speed. We advise to consult also the tables, and the technical data shown in the “General Information” (p. 4 - 7).
For abbreviations and acronyms consult the "glossary" (p. 7)

Installation

Ensure proper alignment of the shafts to avoid overloading, overheating, and premature wear of the bearings. The gearboxes, thanks to their construction design, can be installed in any position.

Start-up

After a brief pre-delivery test, the gearbox requires several hours of running to reach maximum efficiency. A gradual increase in load is recommended, reaching full load within 20-30 hours of operation. Initial temperatures will be higher during the break-in period.

Periodic maintenance

Our gearboxes are maintenance-free; however, it is advisable to periodically check for any lubricant leaks. The replacement of the gearbox depends on operating conditions, with an estimated lifespan of 10,000 hours under normal conditions.

Storage

During warehouse storage, protect the gearboxes from dust and corrosive environments. We recommend periodically rotating the gearboxes to ensure proper lubrication of internal parts and seals.

Warranty

The warranty is valid only if all instructions provided in the catalog are strictly followed.

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EFFICIENCY DIAGRAMS AND TABLES
Output torque with ratio 1/1

Output torque with ratio 1/2

Output torque with ratio 2/1

LOADS DIAGRAMS AND TABLES
Radial load ‹Fr›

Axial load ‹Fa›

Representation of loads
«B»	«D»

- The transmission efficiency of the gearbox is 90%. - The charts represent the maximum radial and axial loads applicable to the gearbox shaft. Note: a radial load (ex. belt tension) can only be applied to the long shaft of the «B» and «D» versions; otherwise, a support must be provided.

66/4UC
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