Attributes

Key Value
(hidden - do not show) .SB1.25xR3m1.25x1545
(hidden) Bevel Gear Typ.Metric x Straight SB1.2.
(hidden) Boston Gear bu.SB1.25-4515 Black Oxide.
(hidden) paired bevel b.SB1.25-4515 x R 3 x 1.25
(hidden) surface treatm.Black Oxide SB1.25-4515
(hidden) tooth finish t.SB1.25-4515 Black Oxide.
Bore Diameter10 mm
Bore Diameter ToleranceH7
Bore TypePlain
Country of Origin (subj.Japan
Face Width8 mm
FinishBlack Oxide
Gear Material & FinishBlack Oxide Coated Carb.
Gear ShapeB4
Hub Diameter34 mm
Hub Projection6 mm
ItemBevel Gear
Material GradeS45C
Maximum Teeth Hardness194 HB
Metric Module Pitch1.25
Mounting Distance21 mm
Outside Diameter56.72 mm
Overall Length14.61 mm
Pitch Diameter56.25 mm
Precision ClassJIS B 1704:1978 Grade 3
Pressure Angle20 Degrees
Ratio3
Surface TreatmentBlack Oxide-Coated
System of MeasurementMetric
Tooth Finish TypeNon-Ground
Tooth FormStraight
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