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QUICKLINKS

MOI instruments
• All MOI instruments
• GB Series (MOI of large parts)
• XR Series (MOI of mid size parts)
• XKR Series (MOI of small parts)
• KSR Series (MOI and CG)
• MP Series (MOI, CG and weight)
• POI Series (POI, MOI and CG)

Know-How
• Selecting the right instrument
• Why measure Moment of Inertia
• Principle of Operation of an MOI Instrument
• Torsion Pendulum Theory
• Find MOI through CG without knowing the CG location

MOI of golf club heads
• Comply with the USGA ruling on MOI
• Use an XR10 to measure MOI
• Optimize club head design

Other Measurements
You may also be interested in measuring:
• Center of Gravity
• Product of Inertia

Refurbished Machines
• CG and MOI
• Spin Balance Machine
• Center of Gravity


MOMENT OF INERTIA INSTRUMENTS
XKR SERIES

XKR02 moment of inertia measurement instrument
Model XKR02 moment of inertia
measurement instrument

PRODUCT OVERVIEW

XKR instruments are extremely accurate moment of inertia measurement instruments. Dedicated to small payloads, XKR series will measure parts as small as the balance wheel of a watch (1 x 10-6 lb-in2 minimum). Payloads up to 40 lb can be measured with these instruments. For more payload capacity please refer to our XR series or GB series.

Accuracies ranging from 0.01% to 0.1% are available.

Construction is similar to the XR series instruments, except these instruments use air bearing technology.

SPECIFICATIONS

MODEL Payload Capacity (lbs.) Overturning Moment (lb.-in) Maximum CG Height (part wt@CG height) Tare MOI
(lb-in2)		 MOI Accuracy
(% of reading + lb-in2)		 Shipping Weight (lb.)
XKR02A 0.2 1 0.2 lb. @ 2" 0.0016 0.1% + 1x10-7 50
XKR02B 0.2 1 0.2 lb. @ 2" 0.0016 1% + 7x10-7 50
XKR1A 1.0 4 1 lb. @ 3" 0.0076 0.1% + 1.5x10-6 50
XKR1B 1.0 4 1 lb. @ 3" 0.0076 1% + 1.5x10-6 50
XKR5A 5.0 8 5 lb. @ 4" 0.023 0.01% + 6x10-6 50
XKR5B 5.0 8 5 lb. @ 4" 0.023 0.1% + 1.3x10-5 50
XKR40A 40 25 40 lb. @ 8" 0.18 0.01% + 5x10-5 340
XKR40AB 40 25 40 lb. @ 8" 0.18 0.03% + 7x10-5 340
XKR40B 40 25 40 lb. @ 8" 0.18 0.1% + 7x10-5 340


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Space Electronics LLC - 81 Fuller Way - Berlin, CT 06037 (USA) - Phone: +1 860 829 0001 - Fax: +1 860 829 0005 - Email: sales@space-electronics.com
Our Mass Properties Measurement Products: 
Center of Gravity Measurement Instruments  
Moment of Inertia Measurement Instruments  
Product of Inertia Measurement Instruments  
Combined Mass Properties Measurement Instruments