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"1100 Series" Rotary Union Slow Rotation Swivel

Model:  1100 Series / SRUS-4127

Type
Material
Part N° Description Nominal Pipe Size Shaft Thread (A) Overall Length (F) Overall Diameter (H) Guide Price Quantity
4127-T22016
750839C
R1013KNPT 1/4 1/4 1.87 .98 Quote Required
4127-T22017
750840C
R1017KNPT 3/8 3/8 2.06 1.25 Quote Required
4127-T22018
750846C
R1060KNPT 2 2 4.48 3.14 Quote Required
4127-T22019
750847C
R1076KNPT 2-1/2 2-1/2 4.46 3.74 Quote Required
4127-T22020
750848C
R1090KNPT 3 3 4.78 4.17 Quote Required
4127-T22011
750841C
R1021KNPT 1/2 1/2 2.30 1.25 Quote Required
4127-T22012
750842C
R1027KNPT 3/4 3/4 2.97 1.77 Quote Required
4127-T22013
750843C
R1034KNPT 1 1 3.42 2.04 Quote Required
4127-T22014
750844C
R1042KNPT 1-1/4 1-1/4 3.77 2.36 Quote Required
4127-T22015
750845C
R1049KNPT 1-1/2 1-1/2 3.85 2.55 Quote Required
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Corrosion resistant nickel plated carbon steel rotary union with the option for stainless steel models.

1100 Series Rotary Union

1100 Series Rotary Union Slow Rotation Swivel

Features and Benefits

  • Bi-Directional Swivel - 1100 Series swivels are for applications where complete rotation is not necessary.
  • Designed for Slow Rotation - Designed for swiveling or slow rotation applications.
  • Superior Sealing Performance - The 1100 Series has the GR seal for superior sealing performance.
  • Multiple Configurations - Available with axial (straight through) flow, or radial flow with the addition of a 90º stainless steel elbow.
  • Corrosion Resistant - Features nickel plated carbon steel construction.
  • Stainless steel models are also available.

1100 Series Slow Rotation Swivel Rotary Union Dimensional Diagram

1100 Series Slow Rotation Swivel Rotary Union Diagram

Nominal Pipe Size Shaft Thread (A) B C DN Overall Length (F) G Overall Diameter (H) I J L M
1/4 1/4 .39 .43 .27 1.87 1.22 .98 .74 .19 .78 .78
3/8 3/8 .43 .47 .39 2.06 1.37 1.25 1.02 .19 1.10 .94
1/2 1/2 .55 .59 .43 2.30 1.49 1.25 1.02 .19 .18 1.10
3/4 3/4 .62 .66 .70 2.97 2 1.77 1.49 .23 1.25 1.25
1 1 .74 .78 .98 3.42 2.36 2.04 2.04 .23 1.53 1.49
1-1/4 1-1/4 .82 .86 1.18 3.77 2.55 2.36 2.36 .23 1.73 1.77
1-1/2 1-1/2 .82 .86 1.49 3.85 2.63 2.55 2.55 .23 2.00 1.96
2 2 .98 1.02 1.88 4.48 3.07 3.14 3.14 .27 2.36 2.28
2-1/2 2-1/2 1.10 .90 2.36 4.46 2.95 3.74 3.74 .27 2.95 2.75
3 3 1.18 1.02 2.95 4.78 3.18 4.17 4.17 .27 3.42 3.07

1100 Series Slow Rotation Swivel Rotary Union Specifications

Nominal Pipe Size Shaft Thread (A) Axial Flow with Stainless Steel Elbow
Nickel Plated Steel Stainless Steel Nickel Plated Steel Stainless Steel
Part Number Description Part Number Description Part Number Description Part Number Description
1/4 1/4 750839C R1013KNPT 760628C R1013INPT 760934 R1013KENPT 760944 R1013IENPT
3/8 3/8 750840C R1017KNPT 750850C R1017INPT 760935 R1017KENPT 760945 R1017IENPT
1/2 1/2 750841C R1021KNPT 750851C R1021INPT 760936 R1021KENPT 760946 R1021IENPT
3/4 3/4 750842C R1027KNPT 750852C R1027INPT 760937 R1027KENPT 760947 R1027IENPT
1 1 750843C R1034KNPT 750853C R1034INPT 760938 R1034KENPT 760948 R1034IENPT
1-1/4 1-1/4 750844C R1042KNPT 750854C R1042INPT 760939 R1042KENPT 760949 R1042IENPT
1-1/2 1-1/2 750845C R1049KNPT 750855C R1049INPT 760940 R1049KENPT 760950 R1049IENPT
2 2 750846C R1060KNPT 750856C R1060INPT 760941 R1060KENPT 760951 R1060IENPT
2-1/2 2-1/2 750847C R1076KNPT 750857C R1076INPT 760942 R1076KENPT 760952 R1076IENPT
3 3 750848C R1090KNPT 750858C R1090INPT 760943 R1090KENPT 760953 R1090IENPT

1100 Series Slow Rotation Swivel Rotary Union Performance Charts

Performance Charts
Rotary Union Design

Rotary Union Design

While rotating joints come in many shapes, sizes, and configurations, they always have the same four basic components: housing, a shaft, a bearing (or bearings) and a seal.

Mechanical Seal

The heart of the Rotary Union or rotary joint is the seal.

The seal prevents the medium (water, oil, air, etc) from leaking outside the Rotary Union while the Rotary Union is in operation.

Duff-Norton uses four basic types of mechanical seals in its Rotary Unions: 1) pusher-type end face mechanical seal, 2) non-pusher type end face mechanical seal, 3) lip seals and 4) o-ring seal. Rotary Unions may have more than one seal.

Bearing

The second most important part of the Rotary Union is the bearing. A Rotary Union may have only one bearing or multiple bearings.

Roller bearings, such as ball bearings and tapered roller bearings, or non-roller bearings, like graphite bearings and bronze bushings, may be used in the Rotary Union.

The bearings are always used to allow a part of the joint, either the shaft or the housing, to rotate.

Shaft

The shaft is the component that carries the medium through the Rotary Union into the drum or roll. In many cases, the shaft will turn with the drum or roll. In some cases, like in larger flanged rotary Unions, the shaft may be stationary while the housing rotates. The bearings and seal are typically assembled around the shaft.

Housing

The housing is the component that holds all of the other elements of the Rotary Union together. The housing has an inlet port, which is a threaded port to which the hose supplying the medium will be attached .

The Rotary Union may also have an outlet port, if the same joint is being used both to supply fluid to a roll and to remove fluid from the roll. In smaller Rotary Unions, the housing is stationary. In larger Rotary Unions, the housing maybe bolted to the drum or roll using a flange. In these cases, the housing rotates at the same speed as the drum.


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