Sprocket and Chain

Description

When used properly, high quality roller chains are powerful and reliable drive systems. They can serve to bridge large centre distances. Various transmission ratios can be realized, independently of the centre distance. In Europe mainly roller chains according to DIN ISO 606 (formerly DIN 8187) are used.

Dimensioning and Efficiency 

The calculation can be made with this tool :   MÄDLER - Tools (eassistant.eu) or refer to page 41 or refer to the e-catalogue to determine a chain drive. With proper lubrication the degree of efficiency is approx. 98 %.

Note regarding the Breaking Load 

The DIN ISO 606 (formerly DIN 8187) specifies the minimum breaking load for each chain size. When this breaking load is exceeded, the chain is destroyed. Roller chains should be loaded with no more than one sixth of the stated breaking load, to avoid an early plastic deformation (permanent elongation). 

Mounting and Maintenance 

The shafts must be set in parallel. The sprockets must be aligned. The slack span should amount to approx 1% to max 2% of the centre distance. For this purpose we recommend mounting a chain tensioner. Large centre distances require a support (guide rail) to be used. 

Chain drives must always be well lubricated. Lubricants and lubrication methods depend on the specific application. 

Determining the Chain Length 

The chain length can be stated in meter or mm, or by stating the number of links. In the latter case, inner and outer links are counted. The chains are usually delivered open. The last link on both ends is an inner link. This leads to an uneven number of links. If a straight connecting ling is used, the closed chain strand has an even number of links. An uneven number of links in a closed strand can only be realized by using a cranked link.

 Note: this link reduces the load bearing capacity of the chain by 20%.


Some products in this category

Products
10978127

Maedler

Sprocket KRTG 20 B-1 1 1/4"x3/4" 27 teeth material steel teeth hardened for taper bush type 3020

10978130

Maedler

Sprocket KRTG 20 B-1 1 1/4"x3/4" 30 teeth material steel teeth hardened for taper bush type 3020

10980925

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 25H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10980930

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 30H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10980932

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 32H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10980935

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 35H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10980938

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 38H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981025

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 25H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981030

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 30H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981032

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 32H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981035

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 35H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981038

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 38H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981125

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 25H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

12677121

Maedler

Double-strand sprocket ZRT 10 B-2 5/8x3/8" 21 teeth material steel for taper bush type 1610

10981128

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 28H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981130

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 30H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981132

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 32H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981135

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 35H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981138

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 38H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981140

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 40H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

Products DESCRIPTIOn
PICTURE
10978127

Maedler

Sprocket KRTG 20 B-1 1 1/4"x3/4" 27 teeth material steel teeth hardened for taper bush type 3020

10978130

Maedler

Sprocket KRTG 20 B-1 1 1/4"x3/4" 30 teeth material steel teeth hardened for taper bush type 3020

10980925

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 25H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10980930

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 30H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10980932

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 32H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10980935

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 35H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10980938

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 38H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981025

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 25H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981030

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 30H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981032

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 32H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981035

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 35H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981038

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 38H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981125

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 25H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

12677121

Maedler

Double-strand sprocket ZRT 10 B-2 5/8x3/8" 21 teeth material steel for taper bush type 1610

10981128

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 28H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981130

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 30H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981132

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 32H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981135

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 35H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981138

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 38H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

10981140

Maedler

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 40H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened

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  • Ball screw spindle
  • Lead screws
  • Sprocket and Chain
  • Timing belt and pulley
  • Toothed rack and pinion

When used properly, high quality roller chains are powerful and reliable drive systems. They can serve to bridge large centre distances. Various transmission ratios can be realized, independently of the centre distance. In Europe mainly roller chains according to DIN ISO 606 (formerly DIN 8187) are used.

Dimensioning and Efficiency 

The calculation can be made with this tool :   MÄDLER - Tools (eassistant.eu) or refer to page 41 or refer to the e-catalogue to determine a chain drive. With proper lubrication the degree of efficiency is approx. 98 %.

Note regarding the Breaking Load 

The DIN ISO 606 (formerly DIN 8187) specifies the minimum breaking load for each chain size. When this breaking load is exceeded, the chain is destroyed. Roller chains should be loaded with no more than one sixth of the stated breaking load, to avoid an early plastic deformation (permanent elongation). 

Mounting and Maintenance 

The shafts must be set in parallel. The sprockets must be aligned. The slack span should amount to approx 1% to max 2% of the centre distance. For this purpose we recommend mounting a chain tensioner. Large centre distances require a support (guide rail) to be used. 

Chain drives must always be well lubricated. Lubricants and lubrication methods depend on the specific application. 

Determining the Chain Length 

The chain length can be stated in meter or mm, or by stating the number of links. In the latter case, inner and outer links are counted. The chains are usually delivered open. The last link on both ends is an inner link. This leads to an uneven number of links. If a straight connecting ling is used, the closed chain strand has an even number of links. An uneven number of links in a closed strand can only be realized by using a cranked link.

 Note: this link reduces the load bearing capacity of the chain by 20%.


10978127

Sprocket KRTG 20 B-1 1 1/4"x3/4" 27 teeth material steel teeth hardened for taper bush type 3020
Lees meer 
114.57 € 114.57000000000001 EUR

10978130

Sprocket KRTG 20 B-1 1 1/4"x3/4" 30 teeth material steel teeth hardened for taper bush type 3020
Lees meer 
132.48 € 132.48 EUR

10980925

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 25H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
32.14 € 32.14 EUR

10980930

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 30H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
32.14 € 32.14 EUR

10980932

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 32H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
32.14 € 32.14 EUR

10980935

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 35H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
32.14 € 32.14 EUR

10980938

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 9 teeth material steeel bore 38H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
32.14 € 32.14 EUR

10981025

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 25H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
36.46 € 36.46 EUR

10981030

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 30H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
36.46 € 36.46 EUR

10981032

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 32H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
36.46 € 36.46 EUR

10981035

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 35H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
36.46 € 36.46 EUR

10981038

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 10 teeth material steel bore 38H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
36.46 € 36.46 EUR

10981125

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 25H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
42.71 € 42.71 EUR

12677121

Double-strand sprocket ZRT 10 B-2 5/8x3/8" 21 teeth material steel for taper bush type 1610
Lees meer 
24.37 € 24.37 EUR

10981128

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 28H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
42.71 € 42.71 EUR

10981130

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 30H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
42.71 € 42.71 EUR

10981132

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 32H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
42.71 € 42.71 EUR

10981135

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 35H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
42.71 € 42.71 EUR

10981138

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 38H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
42.71 € 42.71 EUR

10981140

Sprocket KRF with hub 20 B-1 1 1/4"x3/4" 11 teeth material steel bore 40H7 keyway DIN 6885/1 2 set screw threads teeth induction hardened
Lees meer 
42.71 € 42.71 EUR