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Manufacturer NSK / RHP
BSBD / BSF
Ball Screw Support
NSK BSF2068 Ball Screw Support Bearing
Availability
Confirm at quotation
NSK / RHP · BSBD / BSF · Ball Screw Support · BSF2068
Bore (d)
20 mm
OD (D)
68 mm
Width (B)
28 mm
Contact angle
60°
Dynamic load Ca
31.5 kN
Static axial load
29.3 kN
Limiting speed
5800 min-1
- Manufacturer
- NSK / RHP
- Product Family
- NSK Ball Screw Support Bearings
- Series
- BSBD / BSF
- Designation
- BSF2068
- Configuration
- Ball Screw Support
NSK BSF2068 is a BSBD / BSF ball screw support bearing (20 x 68 x 28 mm) for flanged ball screw support cartridges with bolt-hole mounting for compact machine-tool screw end supports. Catalogue dynamic load Ca: 31.5 kN.
- Product Type
- Ball screw support bearing
- Industry
- Machine tools, precision automation
Why Source Through Golden Bearing Company
Authorised industrial distributor
Engineering Support
Duty review, bore selection, and application engineering assistance
Authorised Manufacturer Data
Specifications published exactly as manufacturer catalogue data
Technical Assistance
Configuration, interchangeability, and spare element guidance
Product Overview
NSK BSF2068 is a BSBD BSF flanged double-row thrust cartridge with bolt-hole mounting on the outer ring. Suited to compact machine-tool screw end supports requiring integrated flange attachment. Individual cartridge width is 28 mm.
Commercial Identification
Authoritative procurement identifiers for ERP, RFQ, and purchase order entry. Copy values directly where shown.
- Manufacturer
- NSK / RHP
- Product Family
- NSK Ball Screw Support Bearings
- Series
- BSBD / BSF
- Designation
- BSF2068
- Configuration
- Ball Screw Support
Selection Guidance
Engineering checkpoints when specifying NSK BSF2068 for a ball screw support application.
Engineering Specifications
NSK Super Precision Bearings Catalogue values for NSK BSF2068. Parameters not tabulated for this size are omitted rather than estimated.
Basic dimensions and identification
| NSK designation | BSF2068 |
|---|---|
| Series | BSBD / BSF |
| Bore diameter (d) | 20 mm |
| Outside diameter (D) | 68 mm |
| Width (B) | 28 mm |
| Contact angle | 60° |
Load ratings
| Basic dynamic load Ca | 31.5 kN |
|---|---|
| Limiting static axial load | 29.3 kN |
Speed, mass and lubrication
| Limiting speed (grease) | 5800 min-1 |
|---|---|
| Mass (approx.) | 0.61 kg |
Preload and axial rigidity
| Preload class | H |
|---|---|
| Factory preload | 1885 N |
| Axial rigidity (duplex DB/DF) | 650 N/um |
| Starting torque, grease (duplex DB/DF) | 0.13 Nm |
Dimensions
Mounting envelope and abutment shoulders for layout, housing design and screw-end integration.
BSBD cartridge width is the individual bearing dimension from NSK catalogue tables, not a paired DT assembly width.
Bore (d)
20 mm
Outside diameter (D)
68 mm
Width (B)
28 mm
| Bore diameter (d) | 20 mm |
|---|---|
| Outside diameter (D) | 68 mm |
| Width (B) | 28 mm |
NSK Catalogue Reference
Authoritative source for the engineering values published on this page.
Published data basis
Published dimensions and load ratings for NSK BSF2068 follow the NSK Super Precision Bearings Catalogue. Preload, axial rigidity and starting torque for this size are not tabulated in the catalogue tables used here and require manufacturer verification. Parameters not shown require NSK manufacturer catalogue verification before design sign-off. Reference to NSK BSF2068 supports engineering identification and quotation only.
Applications
Typical NSK BSBD / BSF ball screw support applications for NSK BSF2068.
Ball screw support
Precision feed axis
Flanged cartridge
Bolt-hole mounting
Compact screw-end support
Compact ball screw supports
Configuration and Arrangement
Series-specific mounting, preload and arrangement context for NSK BSF2068.
Arrangement and mounting
Flanged outer ring with mounting bolt holes; triple-lip DDU seals per BSBD series
Preload
Catalogue preload class H. Factory preload: 1885 N.
BSF flanged cartridge role
Flanged outer ring with mounting bolt holes for compact ball screw end supports where integrated flange mounting is required.
Frequently Asked Questions
Engineering and procurement answers for specification review and quotation.
What is NSK BSF2068?
NSK BSF2068 is a BSBD / BSF ball screw support bearing - Flanged double-row thrust bearing (BSF type). It is used at the fixed or floating end of precision ball screw drives where axial rigidity and accurate screw guidance are required.
What are the dimensions of NSK BSF2068?
Catalogue dimensions for NSK BSF2068 are 20 x 68 x 28 mm (bore x OD x width). Mounting shoulder dimensions are listed in the Dimensions section when tabulated in the NSK Super Precision Bearings Catalogue.
What is the contact angle of NSK BSF2068?
NSK BSF2068 uses a 60° contact angle per the NSK Super Precision Bearings Catalogue for the BSBD / BSF series.
What is the limiting speed of NSK BSF2068?
Grease lubrication limiting speed for NSK BSF2068 is 5800 min-1.
What is the dynamic load rating of NSK BSF2068?
Catalogue basic dynamic load Ca for NSK BSF2068 is 31.5 kN. Multi-row arrangement ratings are shown separately when tabulated.
What factory preload applies to NSK
Factory preload for NSK BSF2068 is 1885 N per BSBD cartridge tables, with axial rigidity 650 N/um.
Is the width of NSK BSF2068 for one bearing or a paired assembly?
Width 28 mm is the individual BSBD cartridge bearing width from NSK catalogue dimensional tables, not a doubled paired-assembly dimension.
How do I order or identify NSK BSF2068?
Base designation NSK BSF2068 must be extended with seal, arrangement, preload and accuracy suffixes for a complete ordering code. Send existing marking, screw diameter, speed and application duty for engineering identification.
Request an Engineering Quote
Share NSK BSF2068 designation, screw diameter, lead, speed, axial load and application context for ball screw support bearing engineering quotation.