1 3/8"
Micro A13-1215 Ball Bearing Retainer A131215
You will find that MicroLubrol handles heavy loads without breaking down.
ASI Mechanical Seal
A nice touch is the stainless steel latch that operates smoothly without sticking.
RC-037-KW-4H, 3/8" Bore Rigid Shaft Coupling with keyway & Set Screw
This product is made from alloy steel, so it feels more substantial than plastic alternatives.
LG018619 4600048432 5" Diameter Pulley 6-1/2" x 4-15/16" 2-15/16" Bore
With this unbranded option, you get solid performance without the marketing hype.
SKF 6200-2RS1N/C3HT51 Bearing 62002RS1NC3HT51
You will find the WAGO 206-1204 Variocrimp 4 excellent for repetitive production line work.
FENNER B-LOC B122106 1-3/8" I.D. X 2.360" O.D. KEYLESS BUSHING
What I love about Jm Eagle is the consistent performance across different batches.
Ruland Clc-22-22-F Coupling, One Piece, Bore Dia 1 3/8 In
A nice touch here is the Seamless 316 SS, which doesn't react with most acids.