Kinematic Base, Magnetic, 3 inch Square

The BK Series of kinematic bases has magnetically coupled top and bottom plates, providing repeatability of less than 100 μrad. The BK-3A kinematic base has a 3.0 x 3.0 inch top and bottom plates. Kinematic bases allow you to mount, remove, and replace optical components with very high repeatability. These bases are especially timesaving in setups where optical elements must frequently be interchanged, or when reference elements must occasionally be inserted in an optical path. The BK-3A-T is an extra top plate that may be ordered separately.
Convenient Magnetic Coupling
Bolt Down Anywhere at Any Orientation
The BK-3A kinematic bases feature a freely rotating disk insert with an eccentric clearance slot. Permiting 0.72 in. of translation which covers at least half the diagonal distance of standard 1.0 in. (25 mm) mounting hole grids, this patented mounting method allows an optical component to blot down anywhere and at any orientation on our optical tables and breadboards.
Exceptional Repeatability
Specifications
- TypeKinematic Base
- Height25.4 mm
- Base size76.2 x 76.2 mm
- Thread Type6-32 and 1/4-20
- MaterialAluminum
- Repeatability<100 µrad
Resources & Downloads
Other
BK-3A RoHS Certificate(278.3 kB, PDF) BK-3A_RoHS2021.pdf(681.5 kB, PDF)
Related Products
Frequently Purchased Together
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | BK-3A-BBottom Plate, For (M-)BK-3A Kinematic Base | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | SP-2Optical Post, 2.0 in. Height, 0.5 in. Diameter, 8-32 and 1/4-20 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | SP-3Optical Post, 3.0 in. Height, 0.5 in. Diameter, 8-32 and 1/4-20 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | PS-0.5EOptical Post, 0.5 in. Height, 1.0 in. Diameter, 8-32 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | PS-1TTable Mount Adaptor, 1.0 in. Diameter Pedestals, 8-32 to 1/4-20 | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | PRC-3Optical Rail Carrier, 3.0 in. Length, 1/4-20 Thread, PRL Series | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | SM-13Vernier Micrometer, 13 mm Travel, 9 lb. Load Capacity, 50.8 TPI | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | SM-25Vernier Micrometer, 25 mm Travel, 23 lb. Load Capacity, 50.8 TPI | FREE 2-day shipping on thousands of products on Newport.com Learn More |
Similar
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | BK-1AKinematic Base, Magnetic, 1 inch Square | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | BK-2AKinematic Base, Magnetic, 2 inch x 2.45 inch | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | 110Kinematic Magnetic Base, 90 lb. Holding Force, 1/4-20 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | BUP-2Universal Base, Freely Rotating Disk, Eccentric Clearance Slot | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | BKL-4Kinematic Base, Locking, 4 inch x 4.5 inch | FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
![]() | LNS-1Optic Inserter Stage, 8-32 Thread | FREE 2-day shipping on thousands of products on Newport.com Learn More |


















