Precision sib sib zog nqus qhov Machining tov rau Hydraulic thooj voos kheej kheej, Ntev Tubes thiab muaj cov khoom xyaw



Daim ntawv thov txheej txheem
Sib sib zog nqus qhov machining yog ib qho ntawm cov txheej txheem xav tau tshaj plaws hauv precision manufacturing.
Thaum qhov sib piv ntawm qhov tob thiab txoj kab uas hla ua loj, cov pa machining txoj kev ntsib cov kev txwv nyob rau hauv:
- Tool rigidity
- Machining stability
- Nthuav ncaj
- Qhov sib xws
Qhov sib sib zog nqus tau dav siv nyob rau hauv cov khoom uas yuav tsum tau ntev sab hauv thiab kev ua haujlwm siab sealing, suav nrog:
- Hydraulic thooj voos kheej kheej
- Hydraulic actuators
- Mining machinery thooj voos kheej kheej
- Engineering khoom Cheebtsam
- Cov kav dej muaj
- Precision mechanical tubes
- Tshwj xeeb alloy Cheebtsam
Rau cov ntawv thov no, qhov kawg sab hauv qhov zoo ncaj qha cuam tshuam rau:
- Kev tiv thaiv dej
- Movement stability
- Kev pab lub neej
- Kev khiav hauj lwm efficiency
Lub qhov tob tsis yog ib qho txuas ntxiv ntawm ib qho bore. Raws li machining qhov tob nce, me me yuam kev sib sau raws tag nrho ntev.
Piv txwv li:
Lub tog raj kheej hydraulic nrog 10-meter stroke tuaj yeem tshwm sim tau ntawm ob qho kawg, tab sis qhov sib txawv me me hauv qhov ncaj los yog txoj kab uas hla tuaj yeem ua rau:
- Tsis sib xws piston txav
- Foob hnav
- Hydraulic siab poob
- Txo cov cuab yeej kev ntseeg siab
Liruite tsim Deep Hole Honing Solutions raws li kab rov tav honing thev naus laus zis, muab precision puab qhov tiav kev daws teeb meem rau cov khoom sib sib zog nqus cylindrical ntev.
Peb lub qhov tob kab rov tav honing tshuab yog tsim los rau precision machining ntawm seamless kav thiab lwm yam ntev - qhov chaw, ua kom raug geometry thiab tswj nto micro- qauv yuav tsum tau rau hydraulic lub tog raj kheej tsim thiab txij nkawm.
Deep Hole Machining Challenges


Challenge 1: Tswj Kev Ncaj Ncees Ntev Ntev
Qhov kev sib tw loj tshaj plaws hauv qhov sib sib zog nqus machining yog tswj qhov tseeb qhov tseeb thoob plaws qhov ntev.
Piv txwv li:
Ib qho workpiece:
- Txoj kab uas hla: Φ300mm
- Ntev: 10000mm
Txawm tias me me sib txawv thaum lub sij hawm machining tuaj yeem tsim:
- Taper
- Curvature
- Cov phab ntsa tsis sib xws
Cov txheej txheem machining ib txwm yuav nyuaj vim tias:
- Cov cuab yeej txiav ua tsis nruj
- Cov cuab yeej vibration nce
- Txiav quab yuam hloov raws lub qhov tob
Qhov sib sib zog nqus honing siv lub cuab yeej honing ntev nrog kev tswj kev nthuav dav thiab rov ua dua tshiab kom maj mam kho qhov yuam kev geometry.
Liruite cov cav tov siv servo- tswj cov tshuab reciprocating kom muaj zog ruaj khov thaum lub sijhawm ua haujlwm ntev.
Technical muaj peev xwm:
- Stroke ntev: mus txog 10000mm tus qauv
- Customized daws: mus txog 20000mm
Kev Sib Tw 2: Kev Tswj Xyuas Qhov Zoo
Rau hydraulic thooj voos kheej kheej thiab precision raj, lub qhov bore nto yuav tsum muab:
- Kev sib txhuam qis
- ruaj khov lubrication
- Txhim khu kev sealing
Ib qho ntxhib lossis tsis sib xws tuaj yeem ua rau:
- foob puas
- Nce hydraulic kuj
- Lub sijhawm ua haujlwm luv dua
Honing tsim ib tug tswj crosshatch qauv nyob rau hauv lub puab nto.
Cov qauv saum npoo no pab:
- Khaws cov roj lubricating
- Txo kev sib txhuam
- Txhim kho kev sealing
Hom Liruite sib sib zog nqus qhov honing nto yuav tsum tau:
|
Parameter |
Tus nqi |
|
Nto Roughness |
Ra0.2-Ra 0.4μm |
|
Qib raug |
H6-H8 |
|
Roundness |
0.02mm-0.04 hli |
Kev Sib Tw 3: Kev tshem tawm cov khoom ruaj khov
Qhov tob tob yuav tsum tau tshem tawm cov khoom zoo ib yam.
Yog hais tias lub zog pub hloov thaum lub sij hawm machining:
- Qhov luaj li cas ntawm lub qhov taub tuaj yeem ua tsis sib xws
- Qhov zoo ntawm qhov chaw yuav txawv
- Cov cuab yeej hnav nce
Liruite sib sib zog nqus qhov honing tshuab siv tsis siv neeg roj pob zeb them nyiaj systems.
Lub servo pub system muab:
- Tsis siv neeg expansion tswj
- ruaj khov txiav siab
- Kev kho qhov tseeb
Feed daws teeb meem:
0.001 hli
Qhov no tso cai rau cov neeg ua haujlwm tswj qhov kawg qhov ntev ntawm qhov tseeb.
Kev Sib Tw 4: Txias thiab pom thaum lub sijhawm ua haujlwm ntev
Qhov sib sib zog nqus honing generates loj npaum li cas ntawm:
- Honing roj paug
- Abrasive hais
- Hlau residue
Kev lim dej tsis zoo tuaj yeem cuam tshuam ncaj qha:
- Nto tiav
- Honing pob zeb lub neej
- Khoom ruaj khov
Liruite qhov sib sib zog nqus honing tshuab siv ntau-theem filtration systems.
Configuration muaj xws li:
- Sib nqus filtration
- Secondary filtration
- Txias qhov system
Hom configuration:
- Filtration capacity: >50L / min
- Roj tank peev: 500L
Lub kaw lus tswj kom ruaj khov machining kub thiab huv si ua haujlwm thaum lub sijhawm ua haujlwm ntev.
Deep Hole Honing Application Requirements
Tej yam kev thov Parameters
|
Yam khoom |
Liruite muaj peev xwm |
|
Txoj kab uas hla |
Φ50mm-Φ560mm |
|
Ua qhov tob |
1000mm-10000mm |
|
Customized Qhov tob |
Txog li 20000mm |
|
Qhov tseeb |
H6-H8 |
|
Nto Roughness |
Ra0.2-Ra0.4 |
|
Tswj hom |
CNC / Servo tswj |
|
Khoom siv |
Hlau, stainless hlau, hlau alloy, customized cov ntaub ntawv |
Liruite Deep Qhov Honing Solution

Liruite muab lub qhov tob tob honing daws es tsis txhob muab cov khoom siv xwb.
Cov tshuaj muaj xws li:
- Kev ntsuam xyuas workpiece
- Kev xaiv tshuab
- Cov cuab yeej tsim
- Kev tsim kho txheej txheem
- Kev teeb tsa
- Kev ua haujlwm
- Kev cob qhia tus neeg ua haujlwm
Raws li cov ntawv thov sib txawv, Liruite muab:
Tshuaj 1: Hydraulic Lub tog raj kheej sib sib zog nqus qhov Honing
Hydraulic thooj voos kheej kheej yog feem ntau daim ntawv thov ntawm qhov sib sib zog nqus honing.
Tej kev siv:
- Excavator cylinders
- Mining cylinders
- Hydraulic nias lub tog raj kheej
- Industrial actuator cylinders
Yam yuav tsum tau muaj:
|
Parameter |
Ntau yam |
|
Txoj kab uas hla |
Φ50mm-Φ560mm |
|
Ntev |
1000mm-20000mm |
|
Nto |
Ra0.2-Ra0.4 |
|
Ua siab ntev |
H6-H8 |
Txoj kev sib sib zog nqus honing txheej txheem txhim kho:
- Nthuav ncaj
- Roundness
- Nto tiav
- foob kev ua haujlwm
Kev daws 2: Ntev Tube Honing Solution
Haum rau:
- Seamless steel tubes
- Cov kav dej precision
- Tshwj xeeb muaj cov raj
Kev sib tw:
- Ntev workpiece txhawb nqa
- Cov cuab yeej sib dhos
- ruaj khov lubrication
Liruite designs:
- Customized fixture system
- Ntev stroke qauv
- Tsis siv neeg them nyiaj system
Solution 3: Kho thiab Remanufacturing Honing Solution
Ntau qhov kev lag luam xav tau kev kho lub tog raj kheej es tsis txhob siv cov khoom siv tshiab.
Daim ntawv thov:
- Cov cuab yeej siv mining tu
- Kev tsim kho tshuab
- Hydraulic khoom refurbishment
Qhov tob honing tuaj yeem rov qab tau:
- Qhov chaw bore puas
- Hnav cov cheeb tsam
- Geometry raug
Qhov no pab cov neeg siv khoom:
- Txo tus nqi hloov
- Txuas cov cuab yeej siv lub neej
- Txhim kho kev txij nkawm zoo
Liruite Deep Hole Kab rov tav Honing Tshuab Configuration
Tshuab Qauv
Lub tshuab feem ntau muaj xws li:
- Lub txaj lub cev
- Spindle system
- Servo reciprocating system
- Servo pub system
- Hluav taws xob tswj qhov system
- Cua txias thiab lim ntaus ntawv
- Lubrication system
- Khoom siv
- Honing cuab yeej
Deep Hole Honing Txheej Txheem



Qhov sib sib zog nqus honing tsis yog ib qho kev ua tiav. Rau ntev thiab sib sib zog nqus cylindrical Cheebtsam, cov txheej txheem honing txiav txim siab qhov kawg ntawm cov khoom.
Liruite tsim cov txheej txheem machining raws li:
- Cov khoom siv ua haujlwm
- Thawj bore mob
- Txoj kab uas hla
- Qhov tob
- Qhov yuav tsum tau muaj tseeb
- Ntau lawm efficiency
Cov txheej txheem Liruite sib sib zog nqus honing muaj xws li cov kauj ruam hauv qab no:
Kauj Ruam 1: Kev Tshawb Fawb Txog Kev Ua Haujlwm thiab Kev Ntsuam Xyuas Txheej Txheem
Ua ntej cov cuab yeej ua haujlwm, Liruite engineers ntsuas:
Cov ntaub ntawv ua haujlwm
Xws li:
- Sab hauv txoj kab uas hla
- Sab nraud txoj kab uas hla
- Ntev
- Qhov hnyav
- Khoom siv
Machining Requirements
Xws li:
- Kev kam rau siab kawg
- Nto roughness
- Ntau lawm ntim
- Batch sib xws
Piv txwv li:
Hydraulic lub tog raj kheej:
- Txoj kab uas hla: Φ300mm
- Ntev: 8000mm
- Khoom siv: Alloy steel
Yuav tsum muaj cov cuab yeej sib txawv thiab cov txheej txheem tsis sib xws piv nrog:
- Φ80mm precision raj
- 2000mm ntev
- Cov khoom siv stainless hlau
Liruite kho:
- Honing taub hau configuration
- Abrasive xaiv
- Expansion siab
- Stroke parameters
- Raws li kev tsim khoom tiag tiag.
Kauj Ruam 2: Rough Honing
Tom qab tho txawv lossis ua ntej -machining, lub qhov sab hauv yuav muaj:
- Cov cuab yeej cim
- Qhov sib txawv
- Taper
- Ovality
Thawj theem honing tsom rau kev kho geometry.
Lub hom phiaj tseem ceeb:
Corect Bore Shape
Tshem tawm:
- Cov ntsiab lus siab hauv zos
- Uneven machining nyiaj pub dawb
- Cov cim tho txawv
Txhim kho Kev Ncaj Ncees
Tshwj xeeb tshaj yog tseem ceeb rau:
- 5m+
- 10m+
- 20m ntev cylinders
Kauj Ruam 3: Precision Honing
Lub precision honing theem tswj qhov kawg:
- Qhov loj me
- Nto tiav
- Crosshatch qauv
Liruite servo expansion system tswj roj pob zeb txav nrog:
Feed daws teeb meem: 0.001mm
Qhov no pab tswj kom ruaj khov qhov tseeb qhov tseeb thaum lub sij hawm zaum kawg machining.
Qhov kawg nto tuaj yeem ua tiav:
Qhov tseeb: H6-H8
Nto roughness: Ra0.2-Ra0.4 μm
Nyob ntawm cov khoom thiab cov txheej txheem xav tau.
Kauj Ruam 4: Kev Tshuaj Ntsuam Xyuas
Tom qab machining, lub workpiece raug tshuaj xyuas raws li cov neeg siv khoom xav tau.
Cov khoom kuaj xyuas muaj xws li:
Txoj kab uas hla
Kev tshuaj xyuas:
- Qhov kawg bore loj
- Txoj kab uas hla sib xws
Tshawb xyuas Geometry
Xws li:
- Roundness
- Cylindricity
- Kev ncaj
Kev soj ntsuam saum npoo
Kev tshuaj xyuas:
- Roughness
- Honing qauv
- Deg mob
Rau lub tog raj kheej hydraulic, tus qauv crosshatch yog qhov tseem ceeb tshwj xeeb vim nws cuam tshuam rau:
- Roj khaws cia
- Foob lubrication
- Lub tog raj kheej ua haujlwm ruaj khov
Liruite Deep Qhov Honing Tshuab Technical Advantages


1. Ntev Stroke Machining Muaj peev xwm
Qhov sib sib zog nqus qhov machining yuav tsum muaj kev ruaj ntseg txav mus ntev.
Liruite sib sib zog nqus qhov kab rov tav honing tshuab yog tsim los rau:
- Ntev hydraulic kheej kheej
- Lub qhov tob tob
- Precision puab qhov
Cov qauv qauv muaj xws li:
|
Qauv |
Machining Qhov tob |
Kev Ua Ntau Yam |
|
SWB-1000S |
1000 hli |
Φ50-Φ560mm |
|
SWB-3000S |
3000 hli |
Φ50-Φ560mm |
|
SWB-5000S |
5000 hli |
Φ50-Φ560mm |
|
SWB-8000S |
8000 hli |
Φ50-Φ560mm |
|
SWB-10000S |
10000 hli |
Φ50-Φ560mm |
|
Qauv tshwj xeeb |
Txog li 20000mm |
Φ50-Φ560mm |
Rau cov neeg siv khoom xav tau cov kab loj loj lossis cov qauv tshwj xeeb, Liruite muab kev tsim tshuab tsim.
2. Precision Servo pub tswj
Thaum honing, tus nqi ntawm cov khoom tshem tawm ncaj qha cuam tshuam rau:
- Txoj kab uas hla kawg
- Nto zoo
- Kev tsim khoom sib xws
Liruite siv servo- tswj kev nthuav dav uas muaj xws li:
- Servo lub cev muaj zog
- Harmonic reducer
- Planetary acceleration mechanism
- Precision kis tau tus mob
Tsis siv neeg roj pob zeb them nyiaj system muab:
0.001mm feed daws teeb meem
Uas txhim kho machining stability rau precision hydraulic Cheebtsam.
3. Stable Reciprocating Movement
Lub tshuab reciprocating yog ib qho ntawm cov qauv tseem ceeb ntawm cov cuab yeej sib sib zog nqus honing.
Liruite configuration muaj xws li:
- Reciprocating lub cev muaj zog
- Txo gearbox
- Kev sib kis mechanism
- Linear kev taw qhia system
Technical parameters:
- Reciprocating lub cev muaj zog: 4.5kW
- Adjustable ceev: 0-40m / min
- Positioning raug: kwv yees li 0.1mm
Lub zog ruaj khov kom ntseeg tau tias:
- Uniform honing qauv
- Qhov zoo ib yam
- Txo kev vibration thaum lub sijhawm ua haujlwm ntev
4. Dedicated Honing Control System
Liruite tsim tshwj xeeb honing tshuab tswj software.
Qhov system muaj xws li:
- 15-nti xim touchscreen
- Manual thiab tsis siv neeg ua haujlwm hom
- Parameter nco
- Kev kuaj mob yuam kev
- Kev soj ntsuam xyuas
Cov neeg ua haujlwm tuaj yeem hloov kho:
- Spindle ceev
- Stroke ceev
- Stroke txoj hauj lwm
- Pub tus nqi
- Kev ua tsis tau
Lub kaw lus tuaj yeem khaws cov khoom tsis sib xws rau cov khoom sib txawv, txhim kho kev rov ua dua tshiab hauv batch ntau lawm.
5. Peb -Qib Txias thiab Lim System
Qhov tob honing yuav tsum huv thiab ruaj khov machining kua.
Liruite filtration system muaj xws li:
- Sib nqus filtration
- Secondary filtration
- Txias qhov system
Hom configuration:
- Filtration capacity: >50L / min
- Roj tank peev xwm: kwv yees li 500L
Cov txiaj ntsig:
- Txo cov kab mob abrasive
- Txhim kho qhov chaw tiav
- Extend honing cuab tam lub neej
- Ua kom ruaj khov machining kub
6. Kev daws teeb meem yooj yim
Qhov sib sib zog nqus qhov feem ntau muaj:
- Ntev ntev
- hnyav hnyav
- Txawv diameters
Liruite muab cov txheej txheem kho kom haum.
Standard configuration:
V-Type Fixture
Clamping ntau yam:
- Φ50mm-Φ620mm
Kev daws teeb meem:
- Pneumatic qhov chaw
- Tsis siv neeg loading system
- Customized ntau lawm kab
Qhov no tso cai rau cov cuab yeej hloov mus rau:
- Lub tog raj kheej sib txawv
- Cov txheej txheem ntau lawm
- Txawv Hoobkas layouts
Deep Hole Honing Daim Ntawv Thov
1. Hydraulic Lub tog raj kheej Manufacturing
Hydraulic thooj voos kheej kheej yog cov feem ntau sib sib zog nqus qhov honing daim ntawv thov.
Hom kev lag luam:
- Kev tsim kho tshuab
- Cov cuab yeej siv mining
- Cov khoom siv hydraulic
- Lub tshuab hnyav
Tej yam khoom xyaw:
- Excavator boom cylinders
- Hydraulic txhawb lub tog raj kheej
- Hydraulic actuator cylinders
Cov kev xav tau ntawm kev ua:
|
Parameter |
Ntau yam |
|
Txoj kab uas hla |
Φ50mm-Φ560mm |
|
Ntev |
1000mm-20000mm |
|
Qhov tseeb |
H6-H8 |
|
Nto |
Ra0.2-Ra0.4 |
2. Hydraulic Lub tog raj kheej Kho thiab Remanufacturing
Ntau tus neeg siv khoom siv hnyav xaiv kev kho tsis yog hloov.
Lub qhov tob honing restores:
- Hnav sab hauv
- Kev puas tsuaj bore geometry
- Kev sealing tsis zoo
Daim ntawv thov:
- Kev kho cov khoom siv mining
- Kev tsim kho machinery
- Muaj cov khoom siv kho dua tshiab
Qhov zoo:
- Tus nqi kho mob qis dua
- Extended lub tog raj kheej kev pab cuam lub neej
- Txo downtime
3. Precision Tube ua
Qhov tob honing kuj tseem siv rau:
- Seamless steel tubes
- Precision mechanical kav
- Tshwj xeeb alloy raj
Yuav tsum muaj:
- Sab hauv nto zoo
- Txoj kab uas hla raug
- Kev ncaj
Liruite tshuab tuaj yeem ua ntau yam ntaub ntawv:
- Cov pa roj carbon steel
- Hlau alloy
- Stainless hlau
- Customized cov ntaub ntawv
4. Cov khoom siv hnyav hnyav
Cov ntawv thov suav nrog:
- Hydraulic presses
- Cov khoom siv hlau ntau lawm
- Loj lifting systems
Cov kev lag luam no xav tau:
- Loj machining qhov tob
- ruaj khov raug
- Ntev - kev cia siab rau lub sijhawm
09 Deep Hole Honing Tshuab Xaiv Qhia
Ua ntej xaiv lub qhov tob honing tshuab, cov neeg siv khoom yuav tsum paub meej tias:
1. Lub taub hau
Piv txwv:
- Φ50-200mm
- Φ200-500mm
- Φ500mm +
Txawv txoj kab uas hla yuav tsum sib txawv:
- Honing taub hau
- Fixtures
- Spindle configurations
2. Machining Ntev
Cov ntaub ntawv tseem ceeb:
- Tag nrho lub raj ntev
- Qhov tseeb honing qhov tob
- Chaw thau khoom
Liruite muab cov qauv los ntawm:
1000mm txog 10000mm txheem qhov tob,
Tshwj xeeb tsim txog li 20000mm.
3. Qhov yuav tsum tau muaj tseeb
Cov neeg siv khoom yuav tsum txhais:
- Ua siab ntev
- Roundness
- Roughness
Hom hydraulic kheej kheej yuav tsum tau:
- H6-H8
- Ra0.2-Ra0.4
4. Ntau lawm ntim
Ntau qib ntau lawm yuav tsum tau sib txawv automation:
Me me batch:
- Phau ntawv fixture
- Kev ua haujlwm yooj yim
Kev tsim khoom loj:
- Tsis siv neeg fixture
- Tsis siv neeg thauj khoom
- Kev sib xyaw ntawm cov kab ntau lawm
Vim li cas thiaj xaiv Liruite Deep Hole Honing Solution?
15 Xyoo Honing Tshuab Kev Paub
Txij li xyoo 2010, Liruite tau tsom mus rau honing tshuab tshawb fawb, kev tsim khoom thiab kev tsim kho.
Customized Khoom Muaj peev xwm
Qhov sib sib zog nqus daim ntaub ntawv yog txawv ntawm cov qauv machining.
Liruite muab:
- Customized tshuab ntev
- Customized fixture
- Customized tooling
- Customized tswj qhov system
Ua kom tiav Engineering Support
Liruite kev txhawb nqa suav nrog:
- Kev soj ntsuam ntawm daim ntawv thov
- Tshuab pom zoo
- Kev tsim kho txheej txheem
- Kev tsim khoom siv
- Kev teeb tsa
- Kev cob qhia tus neeg ua haujlwm
Tsom ntsoov rau Hydraulic Lub tog raj kheej thiab kev siv qhov tob tob
Cov cuab yeej Liruite yog tsim los ntawm cov kev xav tau tiag tiag hauv kev lag luam:
- Ntev stroke machining
- Qhov loj sab hauv
- Precision tiav
- ruaj khov ntau lawm
11 FAQ
Q: Dab tsi yog qhov sib sib zog nqus Honing tshuab siv rau?
A: Lub tshuab qhov sib sib zog nqus honing yog tsuas yog siv rau kev ua tiav ntawm qhov ntev ntev, nrog rau cov thooj voos kheej kheej, cov kav dej seamless thiab cov khoom lag luam.
Q: Dab tsi txoj kab uas hla tuaj yeem Liruite Qhov tob Honing Tshuab Txheej Txheem?
A: Liruite sib sib zog nqus qhov kab rov tav honing tshuab tuaj yeem ua cov tho txawv ntawm kwv yees li Φ50mm txog Φ560mm hauv cov qauv kev teeb tsa. Customized solutions muaj rau cov ntawv thov tshwj xeeb.
Q: Dab tsi yog qhov Max Machining Qhov tob?
A: Cov qauv qauv npog 1000mm txog 10000mm machining qhov tob, thaum tshwj xeeb customized qauv tuaj yeem ncav cuag li 20000mm.
Q: Vim li cas thiaj siv Horizontal Honing Machine Rau Qhov Sib Nrauj?
A: Kab rov tav honing tshuab yog tsim rau ntev thiab hnyav workpieces vim hais tias lawv tso cai rau ncua stroke zog thiab yooj yim workpiece txhawb.
Q: Liruite Customize Deep Qhov Honing Machine?
A: Yog. Liruite tsim kho kev daws teeb meem raws li:
Workpiece loj
Khoom siv
Qhov yuav tsum tau muaj tseeb
Muaj peev xwm ntau lawm
Liruite Deep Qhov Honing Solution
Kev sib sib zog nqus qhov machining yuav tsum muaj ntau tshaj li lub tshuab nrog lub tshuab ua haujlwm ntev. Nws yuav tsum muaj kev nkag siab tag nrho ntawm kev tswj geometry, qhov yuav tsum tau ua ntawm qhov chaw, kev ruaj ntseg thiab kev tsim khoom.
Liruite ua ke CNC kab rov tav honing tshuab, servo- tswj cov tshuab machining thiab customized engineering muaj peev xwm muab qhov sib sib zog nqus honing daws rau hydraulic thooj voos kheej kheej, cov raj muaj thiab cov khoom siv hnyav.
Los ntawm Φ50mm precision raj mus rau 20-meter ntev hydraulic Cheebtsam, Liruite tsim cov cuab yeej raws li txhua tus neeg siv khoom tsim, pab cov tuam txhab lag luam ua tiav cov khoom lag luam txhim khu kev qha thiab kev ua haujlwm ruaj khov.
