JPH0211516Y2 - - Google Patents

Info

Publication number
JPH0211516Y2
JPH0211516Y2 JP797385U JP797385U JPH0211516Y2 JP H0211516 Y2 JPH0211516 Y2 JP H0211516Y2 JP 797385 U JP797385 U JP 797385U JP 797385 U JP797385 U JP 797385U JP H0211516 Y2 JPH0211516 Y2 JP H0211516Y2
Authority
JP
Japan
Prior art keywords
umbrella
housing
rotating body
mechanical seal
shaped rotating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP797385U
Other languages
English (en)
Japanese (ja)
Other versions
JPS61125585U (pm
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP797385U priority Critical patent/JPH0211516Y2/ja
Publication of JPS61125585U publication Critical patent/JPS61125585U/ja
Application granted granted Critical
Publication of JPH0211516Y2 publication Critical patent/JPH0211516Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
  • Mechanical Sealing (AREA)
JP797385U 1985-01-25 1985-01-25 Expired JPH0211516Y2 (pm)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP797385U JPH0211516Y2 (pm) 1985-01-25 1985-01-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP797385U JPH0211516Y2 (pm) 1985-01-25 1985-01-25

Publications (2)

Publication Number Publication Date
JPS61125585U JPS61125585U (pm) 1986-08-07
JPH0211516Y2 true JPH0211516Y2 (pm) 1990-03-23

Family

ID=30486824

Family Applications (1)

Application Number Title Priority Date Filing Date
JP797385U Expired JPH0211516Y2 (pm) 1985-01-25 1985-01-25

Country Status (1)

Country Link
JP (1) JPH0211516Y2 (pm)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH066862B2 (ja) * 1988-06-23 1994-01-26 株式会社塩見組 アースオーガ装置に使用する掘削ヘッド

Also Published As

Publication number Publication date
JPS61125585U (pm) 1986-08-07

Similar Documents

Publication Publication Date Title
AU660856B2 (en) Diamond bearing assembly
JPS62296090A (ja) ドリルビツトのカツタ−用回転軸封装置
CN103477016A (zh) 含有金刚石增强材料的轴承系统及该轴承系统的井下应用
GB2058173A (en) Solids diverter for a downhole drilling motor
JPH01287391A (ja) 自己制御性ドリルロッド
US4156470A (en) Rotary earth boring drill bit with centrifugal foreign particle barrier device
US7086487B2 (en) Anti-mud packing seal gland
US4493381A (en) Turbodrill with a reduced drilling fluid pressure on a floating piston
CA2118389A1 (en) Seal Protection for Rock Bits
CN106948824A (zh) 一种浮动式盾构机用渣土改良介质输送装置
US4256191A (en) Intermittent high-drag oil well drilling methods and apparatus
JPH0211516Y2 (pm)
JPH0636364Y2 (ja) スラリーシールのクエンチング機構
JPS599367A (ja) 軸封装置
US5199514A (en) Seal for well drilling assembly
AU632588B2 (en) Improved rotary drill bits
US4223749A (en) Rotary earth boring drill bit with centrifugal foreign particle barrier device
JPH06317089A (ja) シールド掘進機用ローラーカッター
JPS587094A (ja) トンネル掘進機
JPH0537093Y2 (pm)
WO1997004214A1 (fr) Tronçonneuse a disque
JPH0139970Y2 (pm)
JP2676480B2 (ja) 軸受け
JPH11173074A (ja) 密閉型シールド掘進機のカッタヘッド
CN217440031U (zh) 盘形滚刀