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TOKO ALVA PRIMA LTC GLODOG TSUBAKI DID HITACHI KC CHAIN COUPLING

Rp. CALL
Last Updated
21 Sep 2021
Minimum Order
1 UNIT
Category
Coupling

Specification of TOKO ALVA PRIMA LTC GLODOG TSUBAKI DID HITACHI KC CHAIN COUPLING

TOKO ALVA PRIMA LTC GLODOG


PT ALVA PRIMA HABASIT - AMMERAAL CONVEYOR BELT PVC PU BLET


EMAIL : ALVAPRIMA@CBN.NET.ID


ain Coupling


Features


1. Simple structur


e


A roller chain coupling consists


of one duplex roller chain and


two sprockets for a simplex


chain. Handling is very simple


as both the shafts (driving


shaft and driven shaft) can be


connected and disconnected


by inserting or removing


connecting pins (cotter type).


2. Easy alignment


Owing to the play between the respective components


of the chain and the play between the roller chain and


the sprockets, the eccentricity and angle error can be


generally allowed as follows:


3. Small but powerful


Since a powerful roller chain is engaged with the


sprockets at all the teeth, a large torque can be


transmitted, though the coupling itself is smaller than


other kinds of couplings.


4. Excellent durability


The roller chain is made of heat-treated steel and


manufactured precisely and solidly to the highest


manufacturing standard. The durability is outstanding


and little time is required for maintenance as the


sprockets have induction-hardened special teeth, and


are always engaged with the roller chain.


5. Pr


otection of machine


Rational flexibility decreases vibration, overheating and


wear of the bearings caused by the eccentricities and


angle errors of the shafts.


Standard housing


The standard housings for


No. 8022 or smaller are made


of aluminum alloy die casting,


and those for No. 10020 or


larger are made of aluminum


alloy casting. Installation of


housings has the following


advantages.


1. Advantages of housing


¡


Holding of lubrication


Since a roller chain coupling rotates with flexibility,


the teeth of the roller chain and sprockets slide


slightly during operation. So, they must be kept


lubricated for prevention of wear as much as


possible. The housing functions as a grease box for


the lubrication.


¡


Prevention of grease scattering


Especially in high speed rotation, grease may be


scattered by centrifugal force. The housing functions


as a protector that prevents this.


¡


Protection from dust and moisture (corrosive atmosphere)


When a roller chain coupling is used in a wear-


causing or corrosive circumstances, the chain life is


extremely shortened unless the coupling is perfectly


shielded from the circumstances. The housing


functions to protect the roller chain coupling,


preventing the shortening of life.


¡


High safety and neat appearance


Since the housing has no protrusions outside, it is


safe even if it rotates with the roller chain coupling. It


is also neat in appearance. (To avoid possible injury,


do not touch the housing when rotating.)


2. Structur


e


The roller chain coupling can be split in the direction


perpendicular to the shafts. The hole on the driving


shaft side of the housing firmly holds the coupling's


sprocket hub. The hole on the driven shaft side keeps a


clearance of 1 mm or more from the sprocket hub to


maintain flexibility of the coupling. Oil leakage from this


portion is prevented by a seal ring.


¡


Eccentricity


ε


:


Up to 2% of the roller chain pitch


When the roller chain coupling is used for high speed rotation (in the range of


lubrication types B and C), keep the allowances less than half of the above.


¡


Angle error


α


: Up to 1°


¡


Always wear clothing suitable for work and proper


protection (safety glasses, safety shoes, etc.).


¡


Strictly observe Section 1 "General standards


(prevention of danger by motors, revolving shafts,


etc.), Chapter 1, Part 2 of Occupational Safety and


Health Regulations.


¡


Be sure to switch off the electric power source or any


other power source before starting maintenance


work, and ensure that the power is never accidentally


switched on. Furthermore, make sure not to allow


your clothes or any parts of the body to be caught by


the chain or sprockets, or by any other nearby


equipment.


¡


Be sure to install a chain housing for type C and type


B (see "Table of Lubrication Types").


¡


For installing the roller chain coupling into a high-


speed machine or heavily vibrating machine, coat the


bolts with a loosening preventive.


¡


Install a safety cover to prevent any unexpected flying


of loosened bolts, or scattering of a broken housing


or chain.


¡


Never partially replace or re-use the coupling as its


strength will be lowered, causing damage or


destruction. Furthermore, since the coupling is heat-


treated, never modify the cotter holes or any other


parts. When replacement is necessary, replace the


roller chain coupling or housing as a set respectively.


¡


Noise during operation may be caused by malfunction


and the unit may need to be replaced. Immediately


switch off the power, and check the cause.


For safe


work


Cautions


Housings


and safety


covers


Inhibition of


modification,


re-use, and


partial


replacement


Noise


ε α


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