Your spe­cia­list for par­al­lel keys …
Gi­ve us a call. We will be plea­sed to ad­vi­se you.

fon: +49 (0)2391 91796–0
fax: +49 (0)2391 91796–30

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mo­bil: +49 (160) 7757238

Parallel Keys

We ma­nu­fac­tu­re all stan­dard ty­pes of par­al­lel key to DIN 6885 and to fac­to­ry stan­dards, as well as to cus­tom spe­ci­fi­ca­ti­ons in all stan­dard ma­te­ri­als, with and wi­thout heat tre­at­ment. We can al­so ful­fil spe­ci­fic cus­to­mer re­quests as re­gards par­ti­cu­lar heat tre­at­ments. Our ex­ten­si­ve ran­ge of ma­chine­ry with mo­dern CNC mil­ling tech­no­lo­gy gua­ran­tees fle­xi­ble and cost-ef­fec­ti­ve ma­nu­fac­tu­re.

All ty­pes avail­ab­le in all ma­te­ri­als and with or wi­thout heat tre­at­ment.

Parallel Keys

We ma­nu­fac­tu­re all stan­dard ty­pes of par­al­lel key to DIN 6885 and to fac­to­ry stan­dards, as well as to cus­tom spe­ci­fi­ca­ti­ons in all stan­dard ma­te­ri­als, with and wi­thout heat tre­at­ment. We can al­so ful­fil spe­ci­fic cus­to­mer re­quests as re­gards par­ti­cu­lar heat tre­at­ments. Our ex­ten­si­ve ran­ge of ma­chine­ry with mo­dern CNC mil­ling tech­no­lo­gy gua­ran­tees fle­xi­ble and cost-ef­fec­ti­ve ma­nu­fac­tu­re.

All ty­pes avail­ab­le in all ma­te­ri­als and with or wi­thout heat tre­at­ment.

Form A

  • round end
  • ma­de to DIN 6885

Form B

  • squa­re end
  • ma­de to DIN 6885

Form AB

  • one end round
  • one end squa­re
  • ma­de to DIN 6885

Form C

  • round end
  • with ho­le for re­tai­ning screw
  • ma­de to DIN 6885

Form CD

  • one end round
  • one end squa­re
  • with tap­ped ho­le for for­cing screw
  • al­so avail­ab­le in spe­cial ver­si­ons

Form D

  • squa­re end
  • with ho­le for re­tai­ning screw
  • ma­de to DIN 6885

Form AS

  • round end
  • with tap­ped ho­le for for­cing screw
  • ma­de to DIN 6885

Form ABS

  • one end round
  • one end squa­re
  • with tap­ped ho­le for for­cing screw
  • al­so avail­ab­le in spe­cial ver­si­ons

Form BS

  • squa­re end
  • with tap­ped ho­le for for­cing screw

Form EOS

  • round end
  • with ho­les for two re­tai­ning screws
  • al­so avail­ab­le in spe­cial ver­si­ons

Form E

  • round end
  • with ho­les for re­tai­ning screws
  • with tap­ped ho­le for for­cing screw
  • ma­de to DIN 6885

Form F

  • squa­re end
  • with ho­les for re­tai­ning screws
  • with tap­ped ho­le for for­cing screw
  • ma­de to DIN 6885

Form A

  • round end
  • ma­de to DIN 6885

Form B

  • squa­re end
  • ma­de to DIN 6885

Form AB

  • one end round
  • one end squa­re
  • ma­de to DIN 6885

Form C

  • round end
  • with ho­le for re­tai­ning screw
  • ma­de to DIN 6885

Form CD

  • one end round
  • one end squa­re
  • with tap­ped ho­le for for­cing screw
  • al­so avail­ab­le in spe­cial ver­si­ons

Form D

  • squa­re end
  • with ho­le for re­tai­ning screw
  • ma­de to DIN 6885

Form AS

  • round end
  • with tap­ped ho­le for for­cing screw
  • ma­de to DIN 6885

Form ABS

  • one end round
  • one end squa­re
  • with tap­ped ho­le for for­cing screw
  • al­so avail­ab­le in spe­cial ver­si­ons

Form BS

  • squa­re end
  • with tap­ped ho­le for for­cing screw

Form EOS

  • round end
  • with ho­les for two re­tai­ning screws
  • al­so avail­ab­le in spe­cial ver­si­ons

Form E

  • round end
  • with ho­les for re­tai­ning screws
  • with tap­ped ho­le for for­cing screw
  • ma­de to DIN 6885

Form F

  • squa­re end
  • with ho­les for re­tai­ning screws
  • with tap­ped ho­le for for­cing screw
  • ma­de to DIN 6885

MORE FACTS ON OUR PARALLEL KEYS

Tech­ni­cal drawing

Di­men­si­ons avail­ab­le
Width w 2 — 150 mm
Height h 8 — 80 mm
Length l 4 — 700 mm
A par­al­lel key con­nec­tion is used to ef­fect a shaft-hub con­nec­tion (see pic­tu­re). It is the most com­mon­ly used form-lo­cking con­nec­tion for pul­leys, ge­ar wheels and cou­plings with shafts with pre­do­mi­nant­ly one-si­ded tor­que load. This ty­pe of con­nec­tion is cost-ef­fec­ti­ve, ea­sy to mount and ea­sy to re­lease. The par­al­lel key sits in the shaft and hub key­way and acts as a dri­ver but, in con­trast to the struc­tu­ral­ly si­mi­lar slot wedge con­nec­tion, is on­ly load-bea­ring la­te­ral­ly, the re­ar sur­face ha­ving a de­gree of play. Par­al­lel key con­nec­tions are pu­re dri­ve-ty­pe con­nec­tions. In con­trast to the wedge con­nec­tion, the parts are not clam­ped firm­ly tog­e­ther. The­re must al­ways be clearan­ce bet­ween the par­al­lel key and the bot­tom of the hub key­way (see pic­tu­re). The par­al­lel la­te­ral sur­faces of the par­al­lel key lie against the la­te­ral sur­faces of the shaft and hub key­way and so trans­mit the tor­que load bet­ween shaft and hub through a tight fit. The par­al­lel key func­tions by sur­face pres­su­re and shea­ring. To avoid the per­mis­si­ble strength va­lues being ex­cee­ded, the length of the par­al­lel key should be at least 1.2 times grea­ter than the dia­me­ter of the shaft.

The ad­van­ta­ges of a par­al­lel key con­nec­tion are its high ac­cu­ra­cy, the cen­tral lo­ca­ti­on of the hub, the lack of can­ting and ten­sio­ning, the lack of any need to fit and dri­ve in as with wed­ges and the re­sul­ting lack of da­ma­ge to the com­pon­ents (im­portant if rol­ling bea­rings are being built in). The on­ly re­al dis­ad­van­ta­ges are that the hubs must be ad­di­tio­nal­ly pro­tec­ted against axi­al dis­pla­ce­ment and their vul­nera­bi­li­ty to mu­tu­al tor­que. The ad­van­ta­ges, howe­ver, si­gni­fi­cant­ly out­weigh the dis­ad­van­ta­ges.

The stan­dards for par­al­lel keys by pat­tern and di­men­si­ons are set by DIN 6885. The pic­tu­re be­low shows the dif­fe­rent pat­terns of par­al­lel keys de­li­ve­r­ed by Crum­menerl GmbH.

Cus­tom di­men­si­ons and pat­terns are pos­si­ble. DIN 6885 al­so sti­pu­la­tes that a fit with the to­le­ran­ce field P9, N or JS9 in ac­cordance with DIN 7155 must be used for the to­le­ran­ce of the slot width. The par­al­lel key the­re­fo­re is equi­va­lent to a uni­form shaft with to­le­ran­ce po­si­ti­on h (up­per de­via­ti­on = 0). The ba­ses for the de­sign and cal­cu­la­ti­on of par­al­lel key con­nec­tions are set out by DIN 6892. Par­al­lel keys in pat­tern A and B are avail­ab­le with tap­ped ho­les for for­cing screws, pat­terns E and F al­so wi­thout such tap­ped ho­les. In pat­terns E and F the for­cing screw is lo­ca­ted to one si­de and not cen­tral­ly. This en­ab­les le­verage, which fa­ci­li­ta­tes the re­lease of the par­al­lel key from the slot.

The most com­mon­ly used ma­te­ri­al to­day is C45K. Crum­menerl GmbH ma­nu­fac­tures par­al­lel keys in this ma­te­ri­al in lar­ge quan­ti­ties but al­so makes them from 34CrNiMo6, 42CrMo4 (for grea­ter load-bea­ring), Ni­ros­ta and other spe­cial al­loys. In spe­cial ca­ses, ti­ta­ni­um al­loys are al­so used. Ad­he­rence to fac­to­ry stan­dards and spe­cial heat tre­at­ments are stan­dard to us

Plea­se com­ple­te the form be­low and we will help you as quick­ly as pos­si­ble. The form is al­so avail­ab­le as a pdf file to down­load, com­ple­te and fax to us. Down­load PDF

Key In­for­ma­ti­on Re­qui­red




Your De­tails

*Man­da­to­ry fiel­ds

Tech­ni­cal drawing

Di­men­si­ons avail­ab­le
Width w
2 — 150 mm

Height h
8 — 80 mm

Length l
4 — 700 mm

Cus­to­mer di­men­si­ons avail­ab­le on agree­ment.
Al­so avail­ab­le in inch di­men­si­ons.

A par­al­lel key con­nec­tion is used to ef­fect a shaft-hub con­nec­tion (see pic­tu­re). It is the most com­mon­ly used form-lo­cking con­nec­tion for pul­leys, ge­ar wheels and cou­plings with shafts with pre­do­mi­nant­ly one-si­ded tor­que load. This ty­pe of con­nec­tion is cost-ef­fec­ti­ve, ea­sy to mount and ea­sy to re­lease. The par­al­lel key sits in the shaft and hub key­way and acts as a dri­ver but, in con­trast to the struc­tu­ral­ly si­mi­lar slot wedge con­nec­tion, is on­ly load-bea­ring la­te­ral­ly, the re­ar sur­face ha­ving a de­gree of play. Par­al­lel key con­nec­tions are pu­re dri­ve-ty­pe con­nec­tions. In con­trast to the wedge con­nec­tion, the parts are not clam­ped firm­ly tog­e­ther. The­re must al­ways be clearan­ce bet­ween the par­al­lel key and the bot­tom of the hub key­way (see pic­tu­re). The par­al­lel la­te­ral sur­faces of the par­al­lel key lie against the la­te­ral sur­faces of the shaft and hub key­way and so trans­mit the tor­que load bet­ween shaft and hub through a tight fit. The par­al­lel key func­tions by sur­face pres­su­re and shea­ring. To avoid the per­mis­si­ble strength va­lues being ex­cee­ded, the length of the par­al­lel key should be at least 1.2 times grea­ter than the dia­me­ter of the shaft.

The ad­van­ta­ges of a par­al­lel key con­nec­tion are its high ac­cu­ra­cy, the cen­tral lo­ca­ti­on of the hub, the lack of can­ting and ten­sio­ning, the lack of any need to fit and dri­ve in as with wed­ges and the re­sul­ting lack of da­ma­ge to the com­pon­ents (im­portant if rol­ling bea­rings are being built in). The on­ly re­al dis­ad­van­ta­ges are that the hubs must be ad­di­tio­nal­ly pro­tec­ted against axi­al dis­pla­ce­ment and their vul­nera­bi­li­ty to mu­tu­al tor­que. The ad­van­ta­ges, howe­ver, si­gni­fi­cant­ly out­weigh the dis­ad­van­ta­ges.

The stan­dards for par­al­lel keys by pat­tern and di­men­si­ons are set by DIN 6885. The pic­tu­re be­low shows the dif­fe­rent pat­terns of par­al­lel keys de­li­ve­r­ed by Crum­menerl GmbH.

Cus­tom di­men­si­ons and pat­terns are pos­si­ble. DIN 6885 al­so sti­pu­la­tes that a fit with the to­le­ran­ce field P9, N or JS9 in ac­cordance with DIN 7155 must be used for the to­le­ran­ce of the slot width. The par­al­lel key the­re­fo­re is equi­va­lent to a uni­form shaft with to­le­ran­ce po­si­ti­on h (up­per de­via­ti­on = 0). The ba­ses for the de­sign and cal­cu­la­ti­on of par­al­lel key con­nec­tions are set out by DIN 6892. Par­al­lel keys in pat­tern A and B are avail­ab­le with tap­ped ho­les for for­cing screws, pat­terns E and F al­so wi­thout such tap­ped ho­les. In pat­terns E and F the for­cing screw is lo­ca­ted to one si­de and not cen­tral­ly. This en­ab­les le­verage, which fa­ci­li­ta­tes the re­lease of the par­al­lel key from the slot.

The most com­mon­ly used ma­te­ri­al to­day is C45K. Crum­menerl GmbH ma­nu­fac­tures par­al­lel keys in this ma­te­ri­al in lar­ge quan­ti­ties but al­so makes them from 34CrNiMo6, 42CrMo4 (for grea­ter load-bea­ring), Ni­ros­ta and other spe­cial al­loys. In spe­cial ca­ses, ti­ta­ni­um al­loys are al­so used. Ad­he­rence to fac­to­ry stan­dards and spe­cial heat tre­at­ments are stan­dard to us

UPlea­se com­ple­te the form be­low and we will help you as quick­ly as pos­si­ble. The form is al­so avail­ab­le as a pdf file to down­load, com­ple­te and fax to us.

Key In­for­ma­ti­on Re­qui­red

Your De­tails

*Pflicht­fel­der

Contact

Contact form

Contact details
Crum­menerl GmbH (Of­fice)
Ban­ne­werth­str. 18
58840 Plet­ten­berg
Ger­ma­ny

Crum­menerl GmbH (goods re­cei­ving / goods is­sue / truck ac­cess)
Ban­ne­werth­str. 24c
58840 Plet­ten­berg
Ger­ma­ny

Pho­ne: +49 2391 91796–0
Fax: +49 2391 91796–30
Mail: info@crummenerl-gmbh.de
Web: www.crummenerl-gmbh.de

Contact details

Crum­menerl GmbH (Of­fice)
Ban­ne­werth­str. 18
58840 Plet­ten­berg
Ger­ma­ny

Crum­menerl GmbH (goods re­cei­ving / goods is­sue / truck ac­cess)
Ban­ne­werth­str. 24c
58840 Plet­ten­berg
Ger­ma­ny

Pho­ne: +49 2391 91796–0
Fax: +49 2391 91796–30
Mail: info@crummenerl-gmbh.de
Web: www.crummenerl-gmbh.de

Contact form