DID 60 standard roller chain - Big Bike Webshop

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Technical Data Installation, Adjustment and Maintenance Installation, Adjustment and Maintenance Installation of Sprockets The installation accuracy of sprockets greatly affects the service life of equipment and conveyor chain. Even if they are accurately installed, vibration during operation, land subsidence, etc. may cause deviation. In such cases, the teeth of sprockets are worn laterally and/or the conveyor chain is damaged. Misalignment, parallel measurement and other checks must be conducted from time to time. Levelness Conveyor Chain Connection Procedure As the general connection procedure for conveyor chain, take steps 1 through 4 below. For disconnection, reverse the steps. Using a level, adjust the levelness as specified below. Flow conveyor : 1.0mm or less 1m Bucket conveyor : 0.5mm or less 1m Long pan conveyor : 0.5mm or less 1m Slat conveyor : 0.5mm or less 1m Deviation of sprocket from conveyor chain center line (Deviation angle) Conveyor chain center line Adjust to eliminate deviation from the conveyor chain center line. Misalignment of sprockets (Deviation from center line) Adjust to align the driving and driven sprockets as specified below. Flow conveyor : = 1mm or less Bucket conveyor : = 2mm or less Long pan conveyor : = 1mm or less Slat conveyor : = 1mm or less (3 mm or less for strong type chain 120H and 120Z or larger) 1. Pull out the pin from one end of the chain, and place the chain in alignment with the pin holes of the inner and outer plates. (Photo 1) 2. Insert the pin into the plate hole. (Photo 1) 3. Apply one hammer to the back of the plate on the other side, and insert the pin by hitting it with another hammer. (Photo 2) 4. Insert a T-pin into the pin hole, and bend it by a wrench etc. to secure it in position. (Photo 3 and 4) (Cautions) 1. Confirm the feeding direction of the chain, the positions of attachments etc. before connecting. 2. When hammering in the pin, do not grind the pin to make the process easier. A ground pin will cause various troubles. 3. After completion of chain connection, confirm whether the chain can bend smoothly. Technical Data Maintenance 341
Technical Data Installation, Adjustment and Maintenance Technical Data Tension Adjustment of Conveyor Chain Overly tight or sagged conveyor chain cannot be smoothly operated. Especially, an overly sagged chain rides over sprockets and interferes with the rail, etc. So, check chain condition at appropriate timing and adjust the chain for proper operation. Timing of Adjustment At the beginning of operation, a chain causes initial elongation, and subsequently is elongated due to steady wear. Usually the components of a chain are hardened on the surface, and if the hardened layer is exhausted, elongation progresses rapidly. So, periodical checks are necessary. ¡Check frequency for 8-hour per day operation Within one week after start up of operation Within one month after start up of operation One month after start up of operation Twice monthly This table shows a general case. In the case of continuous operation, operation in abrasive or corrosive environments, increase the check frequency. (Cautions) ¡Also for a chain with tension automatically adjusted by counter weight take-up or spring take-up, confirm whether the tension device functions properly. ¡When high-temperature articles are conveyed, be sure to adjust the take-up since the chain expands or contracts remarkably when the conveyor is started or stopped. Adjust Take-up by Two People The take-up adjustment must be performed equally on both sides. So, one person is required to check the tension of chain, while the other carries out adjustment. For adjustment, alternate tension on both sides little by little. When chain is tensioned too tightly on one side only, accidents are caused. Be sure to position the chain at the centers of the teeth of the sprockets. When the chain is not positioned at the centers of teeth, adjust by tightening the side with a clearance between the sprocket and the chain, or loosen the side where the sprocket is in contact with the chain. Tughten the take-up. Loosen the take-up. Once daily Once weekly Clearance Tooth of sprocket ¡With a horizontal conveyor, irrespective of top or bottom conveyance, the sagging is usually eliminated on the chain return side at a portion immediately after or downstream of the driving sprocket. ¡With a straight gradient conveyor, the point where the sagging is eliminated depends on the gradient angle and the kind of conveyor, so refer to the instruction manual, etc. ¡With an L-type or S-type conveyor, sagging is eliminated at the bend case. Tension Adjusting Degree The degree of tension adjustment is determined with reference to the following conditions. ¡The chain smoothly departs from the sprockets. ¡Spaces are secured to keep the chain, attachments, pans, etc. from interfering with the rail and frames. ¡Appropriate tension is given to prevent surging. For example, for a horizontal continuous flow conveyor, adjust the sag depth to about = L /10 ~ L /20. No chain stripper With chain stripper However, in the following cases, increase the adjusting frequency and set to = L /15 ~ L /25. ¡Intermittent operation of conveyors ¡High-temperature loads ¡High chain speed (25m/min or more) ¡Heavy and/or large chains With L-type continuous flow conveyor, adjust the tension to keep the chain directly visible from the inspection hole. The dimension is RL/2. Overly tight or sagged chains may cause accidents. Inspection window Maintenance Shorten the Chain Before Elongation Limit The chain tension is adjusted by take-up. However, cut short the chain before the elongation comes close to the limit. An overly sagged chain causes troubles due to interference and contact. Check Point Chains sag generally at one place. Therefore, confirm at first what point of the conveyor should be checked. Furthermore, ensure the safety of the area to be checked. Deposition of conveyed object On the bottom of case, the conveyed articles are often deposited. So, periodically clean the inside, to secure space for slackening of chain. 342
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DID's Quality Assurance ¡Customer
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Cautions Cautions for handling of c
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Cautions Cautions for using roller
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INDEX 1 Roller Chains for Power Tra
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Index (In alphabetical order) Produ
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Roller Chains for Power Transmissio
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Small Conveyor Chains ¡General ¡S
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Classification Major division Mediu
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Hi-Guard (E) Double Guard (WG) Envi
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Standard Attachment Chart : In sto
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Tensile strength index 100 Temperat
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Dirty Environment Tensile strength
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Dirty Environment Dusty Tensile str
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Dirty Environment Dusty Maintenance
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Tensile Temperature strength index
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Corrosive Atmosphere Moisture, Salt
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Corrosive Atmosphere Clean Areas Mo
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Corrosive Atmosphere Alkaline Envir
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Double Guard Chain (WG) qApprox. tw
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Large roller (R) and small rollers
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Dimensions of Sprocket for Double P
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Standard Roller Chain Attachment :
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Dimensions of Standard Roller Chain
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Dirty Environment Tensile strength
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Dirty Environment Dusty Tensile str
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Dirty Environment Dusty Maintenance
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Tensile Temperature strength index
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Corrosive Atmosphere Clean Areas Mo
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Flexible Chain (FX) Other Conveyor
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¡Duplex Every-two-link Top Roller
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Dimensions of chain body Chain No.
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[Type indication] Guide links are a
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Meandering prevention chains An R r
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Side Roller Chain with Breaks (TRB)
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Small Conveyor Chains Flexible Chai
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Calculation formulas of theoretical
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Strength of Loaded Components The l
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Conveyor Chains ¡Outline of Conve
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Construction and Components of DK C
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DK Conveyor Chains Standard Conveyo
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Classified by Material and Heat Tre
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Chain Specifications 1. Standard Co
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Dimensional Drawings: DK 07075, DK
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Dimensional Drawings: DK 65300 and
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Dimensional Drawings: DK 11152 (for
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DK Conveyor Chains Anti-seizing Rol
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DK Conveyor Chains Bearing Assemble
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DK Conveyor Chains Seal Chain Seal
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DK Conveyor Chains Strong H-type an
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Dimensional Drawings: Strong Z-type
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DK Conveyor Chains High Link-Plate
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DK Conveyor Chains Conveyor Chain w
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(a) Continuous Flow Conveyor Chain
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(b) Chains for Dust Conveyor This c
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Eco Slight (small sized apron conve
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Bucket Elevator Chains A bucket ele
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Flat Top Type Chain for Coil Convey
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Page 344 and 345: Lubrication To extend the life of c
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DID 60 standard roller chain - Big Bike Webshop

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