Established in 1952

Page: 3090

Precise and Ultra-Precise Calibration Spheres
for Coordinate Measuring Machines
and Master Balls

Spheres With Blind Holes

The proper Steel pin, ( 0.125", 3.18 mm diameter ) is supplied with each of the UB* and PB* series spheres. For the UB-B39, a 0.125 inch (31.75 mm) diameter by 0.850 inch (21.59 mm ) long tungsten carbide pin is supplied.

Part Number*	A - Dimension Ball Diameter + 0.000020" (+500NM)	B - Dimension + 0.010" -.000" (+0.127 mm) (-0.000 mm)	C - Depth + 0.010" (+0.254 mm)	Ball Sphericity	Ball Surface Quality	Ball Material	Price	Purchase
UB-B39	0.3937" 10 mm	0.130" (3.302 mm)	0.150" (3.810 mm)	0.0000025" (63.5 NM)	0.0000005" Ra. (12.5 NM)	Tungsten Carbide	$86.00
UB-B50	0.500" 12.7 mm	0.130" (3.302 mm	0.150" (3.810 mm)	0.0000025" (63.5 NM)	0.0000005" Ra. (12.5 NM)	Hardened Stainless Steel	$86.00
PB-B50 SAT-B50	0.500" 12.7 mm	0.130" (3.302 mm)	0.150" (3.810 mm)	0.0000025" (63.5 NM)	0.0000005" Ra. (12.5 NM)	Hardened Stainless Steel	$61.69
							$63.00
UB-B75	0.750" 19.05 mm	0.130" (3.302 mm)	0.250" (6.35 mm)	0.0000025" (63.5 NM)	0.0000005" Ra. (12.5 NM)	Hardened Stainless Steel	$86.00
PB-B75 SAT-B75	0.750" 19.05 mm	0.130" (3.302 mm)	0.250" (6.35 mm)	0.000005" (125 NM)	0.0000007" Ra. (17.5 NM)	Hardened Stainless Steel	$63.00
							$63.00
UB-B100	1.00" 25.4 mm	0.130" (3.302 mm)	0.250" (6.35 mm)	0.0000025" (63.5 NM)	0.0000005" Ra. (12.5 NM)	Hardened Stainless Steel	$86.00
PB-B100 SAT-B100	1.00" 25.4 mm	0.130" (3.302 mm)	0.250" (6.35 mm)	0.000005" (125 NM)	0.0000007" Ra. (17.5 NM)	Hardened Stainless Steel	$62.69
							$63.00