Overview

Understand the RBD product family

RBD reducing threaded bushings adapt a larger threaded port to a smaller threaded connection. Compare each model's printed T and R sizes and drawing.

Product features

Male external connection and smaller female internal connection.
Seven exact reducing combinations in the source table.

Selection approach

Use the complete listed order code and match the thread size, standard and male/female connection arrangement. Check the source dimensional drawing and include required quantity, medium, working pressure and temperature in your RFQ. Port1 corresponds to the printed T column (female) and port2 to the printed R column (male); thread notations are retained exactly as printed.

All values shown below are traceable to the reviewed Catalog source. Missing information is not inferred.

Applications

Reducing the connection size at a threaded pneumatic port.

Product Selection Tool

Compare RBD Models

Use the complete listed order code and match the thread size, standard and male/female connection arrangement. Check the source dimensional drawing and include required quantity, medium, working pressure and temperature in your RFQ. Port1 corresponds to the printed T column (female) and port2 to the printed R column (male); thread notations are retained exactly as printed.

Model	PN	Thread / port 1	Thread / port 2	L	L1	L2	H	Status
RBD01-02	Confirm by material / quotation	R1/8	R1/4	13.5	9.5	8.5	14	Confirmed
RBD01-03	Confirm by material / quotation	R1/8	R3/8	15	10.5	8.5	17	Confirmed
RBD02-03	Confirm by material / quotation	R1/4	R3/8	15	10.5	11	17	Confirmed
RBD02-04	Confirm by material / quotation	R1/4	R1/2	19.5	13.5	11	21	Confirmed
RBD03-04	Confirm by material / quotation	R3/8	R1/2	19.5	13.5	12	21	Confirmed
RBD03-06	Confirm by material / quotation	R3/8	R3/4	25	18	12	27	Confirmed
RBD04-06	Confirm by material / quotation	R1/2	R3/4	25	18	14	27	Confirmed

Continue to Engineering Reference to verify drawings, dimensions and technical notes before quotation.

Engineering Reference

Technical Data & Dimensions

Review the engineering sheets for the selected model. Confirm dimensions, connections and the applicable configuration before quotation.

Dimensions & Drawings

Model / PN Reference

Technical Notes

Applicability

Catalogue printed p57: RBD - only the model codes shown in this reference

Technical specifications

Product operating conditions and selection parameters
Configuration	Reducing bushing with a larger male threaded end and a smaller female threaded connection.
Body material	Brass (catalogue series-section heading).
Thread selection	Use the exact printed thread values and connection arrangement for the selected model. R and G are distinct selections.
Operating requirements	Specify medium, working pressure and temperature in your RFQ for application matching.

RBD models and dimensional drawings

Source model selection, connection sizes and dimensional reference · Catalogue printed p57

High-resolution web preview · Catalogue printed p57

Technical confirmation notes

Use the complete listed order code and match the thread size, standard and male/female connection arrangement. Check the source dimensional drawing and include required quantity, medium, working pressure and temperature in your RFQ. Port1 corresponds to the printed T column (female) and port2 to the printed R column (male); thread notations are retained exactly as printed.
Use the exact catalog order code and required quantity in your RFQ.

Product Inquiry

Ask about RBD

Choose a candidate model or leave the selection open. The RFQ context is generated from this product record and your current selection.

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RBD Reducing Threaded Bushings