Description
The 1" X 3/4" Steel (Black Oxide) Step-Down Shaft Adapter Coupling with Keyways is a precision-machined component designed to reduce an existing shaft to a smaller output size without replacing the entire shaft. Constructed from black oxide steel, it provides durability, wear resistance, and corrosion protection. Its clamp-type design delivers secure, non-marring attachment without welding, while the integrated keyways provide positive torque transmission between the shaft and mounted components, helping prevent slipping or rotational movement under load. The fully machineable construction also allows modification for specific shaft configurations. Used in machinery, automation equipment, motor drives, and shaft repair.



SPECIFICATIONS DETAILS
PART NUMBER 5ERL100K
TYPE High Strength
DESIGN
Clamp-type design offers secure, non-marring attachment without welding
MATERIAL
Steel (Black Oxide) provides durability, wear resistance, and corrosion protection
SERIES Signature
ALLOY 1215
FINISH Black Oxide
APPROXIMATE WEIGHT 1.57 lb
COUNTRY OF ORIGIN USA
UPC CODE 662786018671
ROHS2 COMPLIANT Yes
REACH COMPLIANT Yes

DIMENSIONAL ATTRIBUTES
BORE SIZE 1 in
COUPLING KEYWAY SIZE 1/4 in
SHAFT DIAMETER 3/4 in
SHAFT KEYWAY SIZE 3/16 in
OUTSIDE DIAMETER 2.000 in
SHAFT END LENGTH 1.250 in
TOTAL LENGTH 3.625 in
RECESSED SCREW Yes
SCREW SIZE 1/4-28 x 3/4 in
SCREW MATERIAL Alloy Steel

CAPACITIES
SCREW SEATING TORQUE 162 in-lb
AXIAL HOLD 2125 lb

APPLICATIONS
Ideal for machinery, automation equipment, motor drives, and shaft repair.
BRAND Stafford Manufacturing



Description
The 1" X 3/4" Steel (Black Oxide) Step-Down Shaft Adapter Coupling with Keyways is a precision-machined component designed to reduce an existing shaft to a smaller output size without replacing the entire shaft. Constructed from black oxide steel, it provides durability, wear resistance, and corrosion protection. Its clamp-type design delivers secure, non-marring attachment without welding, while the integrated keyways provide positive torque transmission between the shaft and mounted components, helping prevent slipping or rotational movement under load. The fully machineable construction also allows modification for specific shaft configurations. Used in machinery, automation equipment, motor drives, and shaft repair.



SPECIFICATIONS DETAILS
PART NUMBER 5ERL100K
TYPE High Strength
DESIGN
Clamp-type design offers secure, non-marring attachment without welding
MATERIAL
Steel (Black Oxide) provides durability, wear resistance, and corrosion protection
SERIES Signature
ALLOY 1215
FINISH Black Oxide
APPROXIMATE WEIGHT 1.57 lb
COUNTRY OF ORIGIN USA
UPC CODE 662786018671
ROHS2 COMPLIANT Yes
REACH COMPLIANT Yes

DIMENSIONAL ATTRIBUTES
BORE SIZE 1 in
COUPLING KEYWAY SIZE 1/4 in
SHAFT DIAMETER 3/4 in
SHAFT KEYWAY SIZE 3/16 in
OUTSIDE DIAMETER 2.000 in
SHAFT END LENGTH 1.250 in
TOTAL LENGTH 3.625 in
RECESSED SCREW Yes
SCREW SIZE 1/4-28 x 3/4 in
SCREW MATERIAL Alloy Steel

CAPACITIES
SCREW SEATING TORQUE 162 in-lb
AXIAL HOLD 2125 lb

APPLICATIONS
Ideal for machinery, automation equipment, motor drives, and shaft repair.
BRAND Stafford Manufacturing



Stafford Manufacturing by Stafford Manufacturing

5ERL100K

1" X 3/4" Steel (Black Oxide) Step-Down Shaft Adapter Coupling with Keyways

$132.68
$132.68
ABOUT NABCO

Supplying You With High Quality Fasteners, Hardware, Safety Products, Tools & More

NABCO Industrial Supply, North American Bolt Company, was founded in 1992 to supply our customers with high-quality products and tools at a rate that would save time and money. We provide incomparable support for all our customers, regardless of their needs.

NABCO is a national distributor of fasteners and industrial shop supplies that provides superior service while striving to effectively offer the best solutions at the lowest possible cost.

At NABCO, we pride ourselves on supplying an extensive range of fasteners, safety products, collars and couplings, shop tools, and everything you need for your industrial projects. Our services include a machining shop, vendor-managed inventory, contract packaging, and private labeling.


Located in Oakwood, GA, we proudly serve the Atlanta-Sandy Springs-Alpharetta and Athens metro areas and the greater state of Georgia. Additionally, we offer nationwide shipping to meet all your needs. With 45 shipping locations across the US, we ensure swift delivery on every order, no matter your location.

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