Spindle Repair & Rebuild Process

Failed Spindles are received to one of our machine service centers.

Document spindle type, maker, 

serial number. Assessments of 

assembled parts conditions are 

checked for damages and crack. 

Photography for whole spindle are 

taken.

Our team performs a comprehensive 

examinations, including run-out, 

clamping force, encoder condition, 

voltage and electric current, 

motor condition, RTD sensor,

shaft taper, and bearing noise.

We carefully disassemble and 

examine all parts for any 

indications of  wear and damage, 

incorrect fitting or sizing. This 

includes spindle failing and 

causal analysis, checking bearing 

journals, bores, shoulders, 

shafts, caps, and spacers.

We'll provide you a detailed quote for spindle repair/rebuild after disassembly and assessment. Our fair pricing ensures an accurate and competitive estimate.

After disassembly, all parts are

washed through our washing 

unit. Coolant lines, air and oil 

lines, chip and foreign objects, 

rust removal, and clean washing 

are performed.

Our replacement process

confidently ensures that all

parts are replaced or reconditioned 

to meet the OEM’s specifications, 

resulting in a performance that 

is ‘like new.’ We sleeve and 

machine the housings, chrome 

and regrind the shafts, and 

balance all spindle components.

Our team carefully assembles 

your spindle. Performing 

precision balance, inspect and 

follow process specification.

Static check and test includes: 

1. Tool clamping force
2. Collet projection length
3. Test bar runout (50mm)
4. Test bar runout (300mm-X,Z) 
5. Test bar runout (300mm-Y,Z) 
6. Spindle cross section runout 
7. Taper face runout.

1. Siemens Running Tester (Built-In) 
2. Fanuc Running Tester (Built-In)
3. Belt Running Tester

• RPM Range : 1,000 - 2,000 - 3,000 ~ tested through Max RPM
• Vibration Balancing Test
• Noise Spindle Running Temperature 
• Encoder Test

Final inspection is performed for 

quality control. All condition of 

collet and lip seal wear outs are 

re-inspected. Appearance and 

packing conditions are checked.

Once we finish rebuilding your 

spindle, we’ll send it back to you 

with performance that’s as good as 

new. We’ll also provide you with 

testing files that include a spindle 

checklist, encoder testing, analysis, 

and pictures.