BOSCH REXROTH
R067224040

$184.45 USD

BOSCH REXROTH
Material:R067224040
Model:KBB-40-DD

Quantity in stock: 0

Note: Sales tax, and shipping will be calculated at checkout.

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth SUPER LINEAR BUSH KBB-40-DD (R067224040) is a high-performance linear bushing designed to meet demanding motion requirements with its steel bearing plates and machined ball guide grooves. This model ensures exceptionally smooth travel and an extended service life due to its optimized ball lead-in chamfers. It is characterized by its closed design without a self-alignment feature, which makes it suitable for applications where lower tipping forces are transferred along the axial direction. The KBB-40-DD supports high travel speeds up to a maximum dynamic load capacity, while also being capable of withstanding accelerations without compromising performance. This linear bushing incorporates integrated wiper seals that protect against contaminants, thereby maintaining system integrity and prolonging the lifespan of the component. The balls within the bushing are crafted from rolling bearing steel, ensuring durable and reliable operation. Notably, this model does not require initial lubrication, which simplifies installation and maintenance procedures. With its capability to operate within a wide temperature range, the KBB-40-DD remains versatile across various environmental conditions. It has been tested extensively to guarantee a long service life, demonstrating resilience over significant distances traveled without failure. The product's design includes attention to frictional forces and coefficients under different loads and lubrication states, providing users with critical performance data for optimal use. Bosch Rexroth's commitment to quality is evident in this product's construction; from the choice of materials like PA or POM for the ball retainer and outer sleeve to the precise engineering that goes into each unit. The SUPER LINEAR BUSH KBB-40-DD stands out as a robust solution for linear motion applications seeking both precision and durability in one package.

Super LB B, closed, 40, with two seals

Super linear bushing
Super B (no self-alignment feature)
Closed
Shaft diameter d = 40
With two seals

Unpacked Weight: 0.374 kg

Low-cost linear bushing for high requirements
Steel bearing plates with machined ball guide grooves and optimized ball lead-in chamfers for outstandingly smooth travel and a long service life
Without self-alignment feature for transferring lower tipping force along the axial direction
High travel speed (5 m/s)
Integrated wiper seals, external seals or no wiper seals
Ball retainer and outer sleeve made of PA or POM
Balls made of rolling bearing steel
No initial lubrication

Data Sheet	Download Data Sheet
2D CAD	Download 2D CAD
2D CAD	Download 2D CAD
3D CAD	Download 3D CAD
3D CAD	Download 3D CAD
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual

Rows of balls	6
Series	Super B (no self-alignment feature)
Footnote friction force FR	1. One wiper seal: Multiply value with factor 0.5 2. Frictional drags generated by linear bushings with integrated wiper seals on two sides when not under radial load. The frictional drags depend on speed and lubrication.
Size C1 H13	60.3
Maximum dynamic load capacity Cmax	10070
Max. acceleration amax	150
Footnote friction coefficient μ	Friction coefficients of unsealed linear bushings when lubricated with oil. The friction coefficient is lowest under heavy load, but can still be above the specified value even under a low load.
Permissible ambient temperature	-10 °C ... +80 °C
Outer diameter D	62
Breakaway force	8
Maximum permissible linear speed vmax	3
Size D	62
Size D1	58.5
Friction coefficient μ	0,001 ... 0,0025
Size C h13	80
Size C2	2.15
Friction coefficient μ max.	0.0025
Note: Maximum permissible speed vmax	Speeds of up to 5 m/s possible. Service life is limited by heightened wear to plastic parts. Tests have shown total travel from 50 • 10⁵ m to 100 • 10⁵ m without failure.
Friction force	3
Footnote minimum dynamic load capacity Cmin	The dynamic load capacities are based on a total travel of 100,000 m. When based on 50,000 m, the C values in the table are to be multiplied by 1.26.
Friction coefficient μ min.	0.001
Footnote maximum dynamic load capacity Cmax	The dynamic load capacities are based on a total travel of 100,000 m. When based on 50,000 m, the C values in the table are to be multiplied by 1.26.
Productgroup ID	17
Permissible ambient temperature (max)	+80
Permissible ambient temperature (min)	-10
Friction force FR footnote 2	Frictional drags generated by linear bushings with integrated wiper seals on two sides when not under radial load. The frictional drags depend on speed and lubrication.
Footnote breakaway force	One wiper seal: Multiply value with factor 0.5
Minimum static load capacity C0min	4350
Maximum static load capacity C0max	5570
Minimum dynamic load capacity Cmin	8240
Shaft diameter d	40
Linear guide type	Linear bushing and shaft
Filter for linear bushings and shafts	Linear bushings
Format of linear bushings	– Closed
Footnote minimum static load capacity C0min
Footnote maximum static load capacity C0max
Weight	0.374
Size D1 with tolerance	58.5 mm
Radial clearance shaft h6/bore K7	+29,-9
Radial clearance shaft/bore h6/H7	+50,+12
Radial clearance shaft h6/bore M7	+20,-18

General technical data

Ø d	mm	10	12	16	20	25	30	40	50
amax	m/s²	150
vmax 1)	m/s	3
m	kg	0.017	0.023	0.028	0.061	0.122	0.185	0.36	0.58
FR 2)	N	0.5	0.8	1	1.5	2	2.5	3	4
Breakaway force 3)	N	1	1.5	2	3	4.5	6	8	10
μ 4)		0.001 ... 0.0025
Rows of balls		5			6
Shaft radial clearance h6/bore H7	µm	+ 9 + 36	+ 38 + 10		+ 43 + 11			+ 50 + 12
Shaft radial clearance h6/bore K7	µm	+ 21 - 6	+ 23 - 5		+ 25 - 7			+ 29 - 9
Shaft radial clearance h6/bore M7	µm	+ 15 - 12	+ 17 - 11		+ 18 - 14			+ 20 - 18
Operating conditions
Permissible ambient temperature (min ... max)		-10 °C ... +80 °C

1)	Speeds of up to 5 m/s possible. Service life is limited by heightened wear to plastic parts. Tests have shown total travel from 50 • 105 m to 100 • 105 m without failure.
2)	Frictional drags generated by Linear Bushings with integrated wiper seals on two sides when not under radial load. The frictional drags depend on speed and lubrication.
3)	One wiper seal: Multiply by a factor of 0.5.
4)	Friction coefficients of unsealed Linear Bushings when lubricated with oil. The friction coefficient is lowest under heavy load, but can still be above the specified value even under a low load.

Load capacities and load moments

Ød	mm	10	12	16	20	25	30	40	50
Cmin	N	600	830	1020	2020	3950	4800	8240	12060
Cmax	N	820	1140	1400	2470	4820	5860	10070	14730
C0min	N	330	420	530	1050	2180	2790	4350	6470
C0max	N	480	620	780	1340	2790	3570	5570	8280

	The load ratings are based on a total travel of 100, 00 m. When based on 50 000 m, the values in the table need to be multiplied by 1.26.

Legend

Symbol	Description	Unit
Ød	Shaft diameters	mm
amax	Maximum acceleration travel	m/s2
Cmax	Maximum dynamic load rating	N
Cmin	Minimum dynamic load rating	N
C0max	Maximum static load rating	N
C0min	Minimum static load rating	N
FR	Friction force	N
m	Mass	kg
vmax	Maximum permissible speed	m/s
μ	Friction coefficient

Impact of load direction on load rating of closed Linear Bushings

The listed load ratings should be chosen depending on installation in minimum or maximum position and should be based on the calculations. If the load direction is clearly defined and the Linear Bushings can be installed in maximum position, the load ratings Cmax. (dynamic load rating) and C0 max (static load rating) can be used. If aligned installation is not possible or the load direction is not defined, the minimum load ratings must be used.

technical illustration-R067224040-Super LB B, closed, 40, with two seals

Reduced load capacity with short stroke

In case of short stroke, the service life of the shaft is less than that of the super Linear Bushing. The load ratings C specified in the tables must therefore be multiplied by the factor f.s .

1)	fs = factor
2)	s = movement path

Definition of dynamic load ratings

Sealing

Super linear bushings come both with integrated and separate wiper seals. The separate wiper seals are specially designed for applications in high contamination environments. An additional seal (for example, bellows, extendable cover) is necessary for extremely high contamination environments. The open super linear bushings can also come fully sealed (with longitudinal seal), however this increases friction.

Dimensions

Ød		mm	10	12	16	20	25	30	40	50
D		mm	19	22	26	32	40	47	62	75
C	h13	mm	29	32	36	45	58	68	80	100
C1	H13	mm	21.6	22.6	24.6	31.2	43.7	51.7	60.3	77.3
C2		mm	1.3			1.6	1.85		2.15	2.65
D1		mm	18	21	24.9	30.5	38.5	44.5	58.5	71.5

Life expectancy calculation

Radial clearance

The radial clearance values shown in the table have been determined from statistics and correspond to values expected in practice.

Adjusting radial clearance

The radial clearance of all Linear Bushings can be adjusted. If, for instance, a zero-clearance guideway is needed, the radial clearance of the Linear Bushing must be reduced using the adjusting screw on the housing (see also Linear Sets) until slight resistance occurs when rotating the shaft. Secure the adjusting screw for applications where vibrations are present.

Adjusting preload

For preloading, the aforementioned adjustment is made using an adjustment shaft that is weaker by the degree of preload.

Customer-built housings

General mounting instructions

Initial lubrication

Linear bushings do not come with initial lubrication. Grease the Linear Bushings before use. Service life data is based on initial lubrication and relubricated Linear Bushings.