SPHERICAL OCTAGON
Multi-CF TM VACUUM CHAMBERSa CF ports
UHV Vacuum Chambers with 10, 8, 6, 4½, 2¾ OR 1aInternal 8.90”, 6.65”, 6.15”, 3.20”, or 2.90” diameter spherical workspace
APPLICATIONS:Compact minature UHV vacuum chamber
Cold physics experiments
Portable low-cost UHV systems
High-complexity UHV subsystems
UHV vacuum manipulator systems
UHV specimen transfer systems
General UHV vacuum plumbing

FEATURES / OPTIONS:Easy access / High port accessability
Grabber grooves on all sealing surfaces (except 1a CF)
Sealing surfaces cut on a hollow sphereUnitary stainless steel 316L construction
No welds, no inside corners, highly polishedPrecise port alignment of <0.1 degree
Spherical Octagons

MCF275-SphOct-C2A8Multi-CF FITTINGCOMMON APPLICATION

Spherical Octagon
Miniature UHV Vacuum Chamber

CONSTRUCTION / MATERIAL

Unitary Stainless Steel 316L

1a CF SEALING SURFACES

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

2¾ CF SEALING SURFACES

Two with (12) 1/4-28 tapped bolt holes, plus one pairof grabber grooves per sealing surface

INTERNAL WORK SPACE

2.900 inch Spherical I.D.

EXTERNAL MOUNTING

Two 2¾ ports have built in OD grooves which accept
Kimball Physics external mounting brackets. See
External Mounting in Multi CF hardware section elsewhere on the website

Internal volume 9.3 in

2¾ Multi-CF Spherical Octagon:
MCF275-SphOct-C2A83THE SPHERICAL OCTAGON

2¾ MULTI-CF SIZE
The 2¾ Multi-CF Spherical Octagon is a ten-port MultiCF Vacuum Chamber, consisting of a hollow sphereintersected by two 2¾ CF sealing surfaces and eight1a CF sealing surfaces. The bolt holes on the 2¾ CF
sealing surfaces are tapped. The 2¾ CF ports have
OD grooves which accept Kimball Physics External
Mounting Brackets.

Spherical Octagon MCF275-SphOct-C2A8

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

Toll Free: 1 888 KIM-PHYS (1 888 546-7497) e-mail: info@kimphys.com
Tel. 1 603 878-1616 Fax: 1 603 878-3700

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SPHERICAL OCTAGON
4½ Multi-CF Spherical Octagon:
MCF450-SphOct-E2A8 / MCF450-SphOct-Ec2A8THE SPHERICAL OCTAGON
4½ MULTI-CF SIZE
The 4½ Multi-CF Spherical Octagon is a ten-port Multi-CF Vacuum Chamber, consisting of a hollow sphere intersected by two 4½ CF sealing
surfaces and eight 1a CF sealing surfaces. The bolt holes on the 4½ CF sealing surfaces may be either tapped or clear.
MCF450-SphOct-E2A8 / MCF450-SphOct-Ec2A8Multi-CF FITTINGSpherical Octagon

COMMON APPLICATIONUHV 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

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

INTERNAL WORK SPACE

3.200 inch Spherical I.D. Internal volume 12.0 in3

Spherical Octagon
MCF450-SphOct-E2A8
MCF450-SphOct-Ec2A86 Multi-CF Spherical Octagon: MCF600-SphOct-F2C8THE SPHERICAL OCTAGON
6 MULTI-CF SIZE
The 6 Multi-CF Spherical Octagon is a ten-port Multi-CF VacuumChamber, consisting of a hollow sphere intersected by two 6 CFsealing surfaces and eight 2¾ CF sealing surfaces. Each 2¾ CF
and 6 CF sealing surface has one pair of Grabber Grooves.

MCF600-SphOct-F2C8
Multi-CF FITTINGCOMMON APPLICATIONCONSTRUCTION / MATERIAL
2¾ CF SEALING SURFACES
6 CF SEALING SURFACESINTERNAL WORK SPACE

Spherical Octagon
UHV Vacuum Chamber
Unitary Stainless Steel 316L
Eight with (12) 1/4-28 tapped bolt holes,plus one pair of Grabber Grooves
per sealing surfaceTwo with (32) 5/16-24 tapped bolt holes,
plus one pair of Grabber Grooves
per sealing surface
4.80 Spherical I.D. Internal volume 77.1 in3Spherical Octagon:
MCF600-SphOct-F2C8

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

Specifications Subject to Change Without Notice.

SPHERICAL OCTAGON
6 Multi-CF Spherical Octagon: MCF600-SphOct-F2A8THE SPHERICAL OCTAGON
6 MULTI-CF SIZE
The 6 Multi-CF Spherical Octagon has two 6 CF sealing surfaces andeight 1a CF sealing surfaces. Each 6 CF has one pair of GrabberGrooves.

MCF600-SphOct-F2A8
Multi-CF FITTINGCOMMON APPLICATIONCONSTRUCTION / MATERIAL
1a CF SEALING SURFACES

Spherical Octagon
UHV Vacuum Chamber
Unitary Stainless Steel 316L
Eight with (12) 8-32 tapped bolt holes,
per sealing surface

6 CF SEALING SURFACES

Two with (24 5/16-24 tapped bolt holes
plus one pair of Grabber Grooves
per sealing surface.
4.695 inch Spherical I.D.
Internal Volume 20.4 in3

INTERNAL WORK SPACE

MCF600-SphOct-F2A8

MCF600-SphOct-F2A8
ALL DIMENSIONS ARE IN INCHES(MILLIMETERS IN PARENTHESES)CAUTIONS:(1) SILVER PLATED BOLTS OR
EQUIVALENT LUBRICATIONMUST BE USED
(2) USE CORRECT BOLT LENGTH

Toll Free: 1 888 KIM-PHYS (1 888 546-7497) e-mail: info@kimphys.com
Tel. 1 603 878-1616 Fax: 1 603 878-3700

SPHERICAL OCTAGON
8 Multi-CF Spherical Octagon: MCF800-SphOct-G2C8THE SPHERICAL OCTAGON
8 MULTI-CF SIZE
The 8 Multi-CF Spherical Octagon has two 8 CF sealing surfaces and eight2¾ CF sealing surfaces. Each 2¾ CF sealing surface has one pair ofGrabber Grooves, and each 8 CF has one triplet of Grabber Grooves.

MCF800-SphOct-G2C8Multi-CF FITTINGCOMMON APPLICATIONCONSTRUCTION / MATERIAL
2¾ CF SEALING SURFACES
8 CF SEALING SURFACESINTERNAL WORK SPACE

Spherical Octagon
UHV Vacuum Chamber
Unitary Stainless Steel 316L
Eight with (12) 1/4-28 tapped bolt holes,
plus one triplet of Grabber Grooves
per sealing surface
Two with (40) 5/16-24 tapped bolt holes
plus one pair of Grabber Grooves
per sealing surface
6.65 in Spherical I.D.
Internal Volume 106.6 in3

MCF800-SphOct-G2C8Spherical Octagon MCF800-SphOct-G2C810 Multi-CF Spherical Octagon: MCF1000-SphOct-H2C8THE SPHERICAL OCTAGON: 10 MULTI-CF SIZE
The 10 Multi-CF Spherical Octagon has two 10 CF sealing surfaces
and eight 2¾ CF sealing surfaces. Each 2¾ CF sealing surface has
one pair of Grabber Grooves, and each 10 CF has one triplet ofGrabber Grooves.

MCF1000-SphOct-H2C8Multi-CF FITTING
Spherical Octagon
COMMON APPLICATIONUHV Vacuum ChamberCONSTRUCTION / MATERIAL
Unitary Stainless Steel 316L
2¾ CF SEALING SURFACES Eight with (12) 1/4-28 tapped bolt holes,
plus one triplet of Grabber Grooves
per sealing surface
10 CF SEALING SURFACES
Two with (40) 5/16-24 tapped bolt holes
plus one pair of Grabber Grooves
per sealing surface
INTERNAL WORK SPACE
8.90 inch Spherical I.D.
Internal Volume 202.3 in3

Spherical Octagon MCF1000-SphOct-H2C8
ALL DIMENSIONS ARE IN INCHES(MILLIMETERS IN PARENTHESES)CAUTIONS:(1) SILVER PLATED BOLTS OREQUIVALENT LUBRICATIONMUST BE USED(2) USE CORRECT BOLT LENGTH

Spherical Octagon MCF1000-SphOct-H2C8Toll Free: 1 888 KIM-PHYS (1 888 546-7497) e-mail: info@kimphys.com
Tel. 1 603 878-1616 Fax: 1 603 878-3700

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