SPHERICAL SQUAREMulti-CF TM Vacuum Chamber
a CF Ports
UHV Vacuum Chambers WITH 8, 6, 4½, 2¾ and 1aLarge Diameter Internal Spherical Workspaces
APPLICATIONS:Compact small UHV Vacuum chamber
Portable Low-Cost UHV Systems
High-Complexity UHV SubSystems
UHV Vacuum Manipulator Systems
UHV Specimen Transfer Systems
General UHV Vacuum Plumbing

FEATURES / OPTIONS:Unencumbered large diameter spherical workspace:
3.600” for MCF450, 4.800” for MCF 600, AND 8.000” forMCF800
Easy access UHV vacuum chamber
Grabber Grooves on all sealing surfaces (except 1a CF)
1a, 2¾, 4½, 6, or 8 CF sealing surfaces cut on a hollow sphereUnitary stainless steel 316L construction (except MCF450SphSq-E2C3r1A4)
No inside corners, highly polishedPrecise port alignment of < 0.1 degree
THE 4½ Multi-CF SPHERICAL SQUARESThe MCF450 Spherical Squares are six to ten port small Multi-CF UHV vacuum chambers. Each chamber consists of a hollow sphere intersectedby two 4½ CF sealing surfaces, four 2¾ CF sealing surfaces and zero to four 1a CF sealing surfaces. Part MCF450-SphSq-E2C3r1A4 has anextended 2¾ CF sealing surface that is rotatable and is the only part listed that has a weld.
Interior space has been greatly increased over previous designs. Each 4½ CF sealing surface has one pair of Grabber Grooves, while each 2¾ CF
sealing surface has one triplet of Grabber Grooves. The rotatable 2¾ CF has an additional pair located at the end of the extension tube next to thesealing surface
MCF450-SphSq-E2C4

MCF450-SphSq-E2C3r1A4

Multi-CF FITTINGSpherical Square

COMMON APPLICATIONUHV Vacuum Chamber

CONSTRUCTION / MATERIAL

Unitary Stainless Steel 316L

1a CF SEALING SURFACES

None

Four with (12) 8-32 tapped bolt holes per sealing suface

2¾ CF SEALING SURFACES

Four with (6) 1/4-28 tapped bolt holes, plus one tripletof Grabber Grooves per sealing surface

Four with (6) 1/4-28 tapped bolt holes;
Three CF sealing surfaces with (1) triplet of Grabber Grooves;
One rotatable CF with (1) pair and (1) triplet of Grabber Grooves

4½ CF SEALING SURFACES

Two with (8) 5/16-24 tapped bolt holes, plus one pair of Two with (8) 5/16-24 tapped bolt holes, plus (1) triplet of Grabber
Grabber Grooves per sealing surface
Grooves per sealing surface

EXTERNAL MOUNTING

No internal mounting holes. See External Mounting
Brackets on website for mounting options

No internal mounting holes. See External Mounting Brackets onwebsite for mounting options

INTERNAL WORK SPACE

3.600 inch Spherical ID. Internal volume 26.7 in3

3.600 inch Spherical ID.

Internal volume 30.5 in3

See drawings on next page

ALL DIMENSIONS ARE IN INCHES(MILLIMETERS IN PARENTHESES)

Spherical Square
MCF450-SphSq-E2C4Toll Free: 1 888 KIM-PHYS (1 888 546-7497) e-mail: info@kimphys.com
Tel. 1 603 878-1616 Fax: 1 603 878-3700 www.kimballphysics.com

Spherical Square
MCF450-SphSq-E2C3r1A4Copyright © 2011 by Kimball Physics, Inc.
05/11/2011

CAUTIONS:(1) SILVER PLATED BOLTS OR
EQUIVALENT LUBRICATIONMUST BE USED
(2) USE CORRECT BOLT LENGTH

4.50” SPHERICAL SQUARESALL DIMENSIONS ARE IN INCHES(MILLIMETERS IN PARENTHESES)CAUTIONS:(1) SILVER PLATED BOLTS OR
EQUIVALENT LUBRICATIONMUST BE USED(2) USE CORRECT BOLT LENGTH

14Specifications Subject to Change Without Notice.

6.0” SPHERICAL SQUARETHE MCF600 SPHERICAL SQUAREThe MCF600 Spherical Square is afourteen port small Multi-CF UHVvacuum chamber.
The chamberconsists of a hollow sphere intersectedby two 6 CF sealing surfaces, four2¾ CF sealing surfaces and eight
1a CF sealing surfaces. Each 2¾ CF
sealing surface has one triplet ofGrabber Grooves, and each 6 CF has
one pair of Grabber Grooves

Spherical Square
MCF600-SphSq-F2C4A8MCF600-SphSq-F2C4A8
Multi-CF FITTING

Spherical Square

COMMON APPLICATION

Small UHV Vacuum Chamber

CONSTRUCTION / MATERIAL

Unitary Stainless Steel 316L

1a CF SEALING SURFACES

Eight with (12) 8-32 tapped bolt holes per sealingsurface

2¾ CF SEALING SURFACES

Four with (6) 1/4-28 tapped bolt holes, plus one
triplet of Grabber Grooves per sealing surface

6 CF SEALING SURFACES

Two with (16) 5/16-24 tapped bolt holes, plus one
pair of Grabber Grooves per sealing surface

EXTERNAL MOUNTING

No internal mounting holes. See External Mounting
Brackets on website for mounting options

INTERNAL WORK SPACE

4.800 inch Spherical ID
Internal volume 54.8 in3

MCF600-SphSq-F2E4A8
Multi-CF FITTINGSpherical Square

COMMON APPLICATION

Small UHV Vacuum Chamber

CONSTRUCTION / MATERIAL

Unitary Stainless Steel 316L

1a CF SEALING SURFACES

Eight with (12) 8-32 tapped bolt holes per sealingsurface

4½ CF SEALING SURFACES

Four with (16) 5/16-24 tapped bolt holes, plus one
triplet of Grabber Grooves per sealing surface

6 CF SEALING SURFACES

Two with (32) 5/16-24 tapped bolt holes, plus one
triplet of Grabber Grooves per sealing surface

EXTERNAL MOUNTING

No internal mounting holes. See External Mounting
Brackets on website for mounting options

INTERNAL WORK SPACE

5.900 inch Spherical ID
Internal volume 123.8 in3

ALL DIMENSIONS ARE IN INCHES(MILLIMETERS IN PARENTHESES)CAUTIONS:(1) SILVER PLATED BOLTS OR
EQUIVALENT LUBRICATIONMUST BE USED
(2) USE CORRECT BOLT LENGTH

15Specifications Subject to Change Without Notice.

8.0” SPHERICAL SQUARE
THE 8 Multi-CF SPHERICAL SQUAREThe MCF800-SS2040000 Spherical Square is a six port Multi-CF UHV vacuum chamberconsisting of a hollow sphere intersected by two 8 CF sealing surfaces and four 4½ CFsealing surfaces. Each 8 CF sealing surface has one quadruplet of Grabber Grooves, andeach 4½ CF has one pair of Grabber Grooves.

MCF800-SphSq-G2E4
Multi-CF FITTINGCOMMON APPLICATIONCONSTRUCTION / MATERIAL
4½ CF SEALING SURFACES
8 CF SEALING SURFACESINTERNAL WORK SPACE

Spherical Square
UHV Vacuum Chamber
Unitary Stainless Steel 316
Four with (16) 5/16-24 tapped bolt holes,plus one pair of Grabber Grooves
per sealing surface
Two with (40) 5/16-24 tapped bolt holes,
plus one quadruplet of Grabber Grooves
per sealing surface
8.000 inch Spherical I.D.
Internal volume 222.2 in3Spherical Square
MCF800-SphSq-G2E4

ALL DIMENSIONS ARE IN INCHES(MILLIMETERS IN PARENTHESES)CAUTIONS:(1) SILVER PLATED BOLTS OR
EQUIVALENT LUBRICATIONMUST BE USED
(2) USE CORRECT BOLT LENGTH

16Specifications Subject to Change Without Notice.

SPHERICAL SQUARE

8 Multi-CF SPHERICAL SQUAREThe MCF800-SphSq-G2E4C4 Spherical Square is a six port Multi-CF UHV vacuum
chamber consisting of a hollow sphere intersected by two 8 CF sealing surfaces as well asfour 4½ CF and four 2¾ CF sealing surfaces. Each 8 CF sealing surface has one
quadruplet of Grabber Grooves; each 4½ CF and 2¾ CF sealing surface has one pair of
Grabber Grooves.

MCF800-SphSq-G2E4C4Multi-CF FITTINGCOMMON APPLICATIONCONSTRUCTION / MATERIAL
2¾ CF SEALING SURFACES
4½ CF SEALING SURFACES
8 CF SEALING SURFACESINTERNAL WORK SPACE

Spherical Square
UHV Vacuum Chamber
Unitary Stainless Steel 316
Four with (12) 1/4-28 tapped bolt holes,
plus one pair of Grabber Grooves
per sealing surface
Four with (16) 5/16-24 tapped bolt holes,
plus one pair of Grabber Grooves
per sealing surface
Two with (40) 5/16-24 tapped bolt holes,
plus one quadruplet of Grabber Grooves
per sealing surface
8.000 inch Spherical I.D.
Internal volume 228.1 in3

Spherical Square MCF800-SphSq-G2E4C4a CF)
8 Multi-CF SPHERICAL SQUARE (WITH 16 1a
The MCF800-SphSq-G2E4C4A16 Spherical Square is a six port Multi-CF UHV vacuum
chamber consisting of a hollow sphere intersected by two 8 CF sealing surfaces as well asfour 4½ CF, four 2¾ CF, and sixteen 1a CF sealing surfaces. Each 8 CF sealing surface
has one quadruplet of Grabber Grooves; each 4½ CF and 2¾ CF sealing surface has one
pair of Grabber Grooves.

MCF800-SphSq-G2E4C4A16
Multi-CF FITTINGCOMMON APPLICATIONCONSTRUCTION / MATERIAL
1a CF SEALING SURFACES

Spherical Square
UHV Vacuum Chamber
Unitary Stainless Steel 316
Sixteen with (12) 8-32 tapped bolt holes.

2¾ CF SEALING SURFACES

Four with (12) 1/4-28 tapped bolt holes,
plus one pair of Grabber Grooves
per sealing surface
Four with (16) 5/16-24 tapped bolt holes,
plus one pair of Grabber Grooves
per sealing surface
Two with (40) 5/16-24 tapped bolt holes,
plus one quadruplet of Grabber Grooves
per sealing surface
8.000 inch Spherical I.D.
Internal volume 232.3 in3

4½ CF SEALING SURFACES
8 CF SEALING SURFACESINTERNAL WORK SPACE

Spherical Square MCF800-SphSq-G2E4C4A16

ALL DIMENSIONS ARE IN INCHES(MILLIMETERS IN PARENTHESES)CAUTIONS:(1) SILVER PLATED BOLTS OR
EQUIVALENT LUBRICATIONMUST BE USED
(2) USE CORRECT BOLT LENGTH

17Specifications Subject to Change Without Notice.

SPHERICAL SQUARE

8 Multi-CF Spherical Square
MCF-800-SphSq-G2E4C4ALL DIMENSIONS ARE IN INCHES(MILLIMETERS IN PARENTHESES)

18

Specifications Subject to Change Without Notice.