BOSCH REXROTH
R061202510

$131.42 USD

BOSCH REXROTH
Material:R061202510
Model:KBM-E-25-DD

Quantity in stock: 0

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***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 STD.LINEAR BUSHING KBM-E-25-DD (R061202510) is a high-quality standard linear bushing designed for applications requiring precise linear motion and durability in harsh environments. This robust bushing features an adjustable radial clearance, making it versatile for various industrial applications. It is equipped with two seals and a rugged all-metal design, including a steel ball retainer that ensures reliable operation even in heavy contamination conditions. The KBM-E-25-DD is engineered with multiple lubricant reservoirs allowing for extended lubrication intervals or potentially lubrication-free operation throughout its lifespan. Its design also incorporates integrated wiper seals that protect against high contamination levels, making it suitable for use in demanding sectors such as woodworking, foundries, and cement plants. The bushing's outer sleeve is hardened and ground for added resilience, while the steel ball retainer accommodates shaft diameters of 12 to 50mm with an alternative plastic retainer made of PA for certain sizes. This linear bushing can withstand temperatures well above 100°C (without wiper seals) and operates efficiently under vacuum conditions. It has a size E footprint with an outer diameter D of 40mm. The maximum dynamic load capacity Cmax is specified by the manufacturer, ensuring reliable performance under load. The KBM-E-25-DD has the capability to handle maximum accelerations and offers low friction coefficients, which vary depending on load conditions but remain within a specified range to ensure smooth motion. With a weight of 0.29kg, this linear bushing provides solid performance without adding excessive mass to the system. The product's design includes features like pockets that collect dirt to prevent jamming and integrated steel retaining rings that allow higher temperature operation with larger shaft diameters. Overall, the Bosch Rexroth STD.LINEAR BUSHING KBM-E-25-DD delivers reliable linear guidance with easy adjustability and maintenance-friendly features for industrial applications requiring precision under challenging conditions.

Standard LB, adjustable, 25, with two seals

"Standard linear bushing
Standard (metal)
Adjustable
Shaft diameter d = 25
With two seals
Design: normal"

Unpacked Weight: 0.181 kg

Rugged all-metal design with steel ball retainer for harsh environments and heavy contamination
Many pockets acting as lubricant reservoirs for extended lubrication intervals or lubrication for life
Seal-free and with steel ball retainers for temperatures well above 80°C or under vacuum
Radial clearance adjustable
Integrated wiper seals for high contamination
For use in woodworking, foundries, cement plants
Pockets collect any dirt that may have worked its way in to prevent the linear bushing from jamming.
No wiper seals, come with integrated steel retaining rings; higher temperatures allowed with shaft diameters 12 and higher
Hardened and ground outer sleeve
Steel ball retainer (shaft diameters 5 and 8 with plastic retainer made of PA)
Balls made of rolling bearing steel

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Rows of balls	5
Series	Standard (metal)
Footnote friction force FR	One wiper seal: Multiply value with factor 0.5
Size C1 H13	43.7
Maximum dynamic load capacity Cmax	2480
Footnote permissible ambient temperature (min ... max)	Higher temperatures are only admissible at linear bushings without wiper seals with ball retainers made of steel. Make allowance for reductions in load capacity.
Max. acceleration amax	100
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
Size E	2
Outer diameter D	40
Breakaway force	14
Maximum permissible linear speed vmax	2.5
Size D	40
Size D1	38.5
Friction coefficient μ	0,001 ... 0,004
Size C h12	58
Size C2	1.85
Friction coefficient μ max.	0.004
Friction force	5
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	1560
Maximum static load capacity C0max	2280
Minimum dynamic load capacity Cmin	2080
Shaft diameter d	25
Linear guide type	Linear bushing and shaft
Filter for linear bushings and shafts	Linear bushings
Format of linear bushings	E – Adjustable
Footnote minimum static load capacity C0min
Footnote maximum static load capacity C0max
Weight	0.181
Size D1 with tolerance	38.5 mm
Radial clearance shaft h6/bore K7	+32,-1
Radial clearance shaft/bore h6/H7	+50,+17

General technical data

Ø d	mm	5	8	12	16	20	25	30	40	50	60	80
amax	m/s²	100								50
vmax	m/s	2.5								2
m	kg	0.01	0.02	0.04	0.05	0.1	0.19	0.32	0.62	1.14	2.11	4.7
FR 1) 2)	N	0.4	0.5	2	3	4	5	6	8	10	12	15
Breakaway force 1)	N	0.8	1	6	9	12	14	18	24	30	36	45
μ 3)		0.001 ... 0.004
Rows of balls		4				5		6
Shaft radial clearance h6/bore H7	µm	+ 34 + 11	+ 36 + 13	+ 41 + 14	+ 43 + 14	+ 49 + 16	+ 50 + 17		+ 60 + 20		+ 68 + 22	+ 71 + 24
Shaft radial clearance h6/bore K7	µm	+ 22 - 1	+ 24 - 1	+ 26 - 1	+ 28 - 1	+ 31 - 2	+ 32 - 1		+ 39 - 1		+ 43 - 1	+ 46 - 1
Operating conditions
Permissible ambient temperature (min ... max) 4)		-10 °C ... +80 °C

1)	One wiper seal: Multiply by a factor of 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.
3)	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.
4)	Only unsealed Linear Bushings with steel ball retainers may be used at higher temperatures. Make allowance for reductions in load capacity.

Load capacities and load moments

Ød	mm	5	8	12	16	20	25	30	40	50	60	80
Cmin	N	180	320	420	580	1170	2080	2820	5170	8260	11500	21000
Cmax	N	210	370	480	670	1390	2480	2980	5480	8740	12100	22200
C0min	N	140	240	280	440	860	1560	2230	3810	6470	9160	16300
C0max	N	200	330	400	620	1250	2280	2860	4880	8280	11730	20850

	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-R061202510-Standard LB, adjustable, 25, with two seals

Definition of dynamic load ratings

Installation dimensions/interchangeability

Standard Linear Bushings have the same installation dimensions as super Linear Bushings. They are interchangeable, differ however in terms of securing, radial clearance, load ratings and lubrication.

Sealing

Standard Linear Bushings come with a wiper seal with shaft diameters of 5 and higher. Open standard Linear Bushings with shaft diameters 20 to 80 can also come fully sealed (with longitudinal seal; increased friction).

Dimensions

Ød		mm	5	8	12	16	20	25	30	40	50	60	80
D		mm	12	16	22	26	32	40	47	62	75	90	120
C	h12	mm	22	25	32	36	45	58	68	80	100	125	165
C1	H13	mm	14.2	16.2	22.6	24.6	31.2	43.7	51.7	60.3	77.3	101.3	133.3
C2		mm	1.1		1.3		1.6	1.85		2.15	2.65	3.15	4.15
D1		mm	11.1	14.7	20.5	24.9	30.5	38.5	44.5	58	71	85	114
E		mm	1.5				2

Life expectancy calculation

General mounting instructions

Customer-built housings

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.