BOSCH REXROTH
R060030300

$77.77 USD

BOSCH REXROTH
Material:R060030300
Model:KBM-3

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 STD.LINEAR BUSHING KBM-3 (R060030300) is a high-quality standard linear bushing designed for robust applications. This closed-type bushing is crafted from standard metal without a seal, offering a rugged all-metal design with a steel ball retainer that is suitable for harsh environments and heavy contamination. Its design includes many pockets that act as lubricant reservoirs to extend lubrication intervals or even allow for lubrication for life. The steel ball retainer in this linear bushing can accommodate shaft diameters with variations that include plastic strips made of POM or PA, depending on the size. The Bosch Rexroth STD.LINEAR BUSHING KBM-3 is ideal for use in demanding conditions such as woodworking, foundries, and cement plants. It has been engineered to prevent jamming by collecting any dirt that enters the system. The lack of wiper seals and the inclusion of integrated steel retaining rings enable this bushing to withstand higher temperatures, particularly with larger shaft diameters. This linear bushing features a hardened and ground outer sleeve, ensuring durability and smooth operation. It offers excellent dynamic load capacities based on a total travel distance, with specific multipliers provided for different distances traveled. The product's friction coefficient remains low under heavy loads but may vary depending on conditions such as load and lubrication levels. With rows of balls aiding movement, the Bosch Rexroth STD.LINEAR BUSHING KBM-3 ensures minimal friction force under normal operation, which can be adjusted when wiper seals are present. It also boasts a wide range of permissible ambient temperatures, making it versatile in various working conditions. The outer diameter and maximum permissible linear speed are specified to ensure compatibility and performance within its intended applications. Overall, this linear bushing is designed to meet the demands of heavy-duty industrial use while maintaining smooth motion and long-term reliability even in environments where contamination is a concern. Its construction allows for high load capacities while still providing protection against external elements without sacrificing performance.

Standard LB, closed, 3, without seal

standard linear bushing
Standard (metal)
Closed
Shaft diameter d = 3
Without seal
Version: Standard

Unpacked Weight: 0.0016 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
Steel ball retainer (shaft diameters 3, 4 and 10 with plastic strip made of POM and shaft diameters 5 and 8 made of PA)
Closed, for self-supporting shafts
Balls made of rolling bearing steel
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

Data Sheet	Download Data Sheet
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

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.
Rows of balls	4
Footnote shaft radial clearance h6	Determined from working bore diameter and shaft tolerance statistics. Recommended housing bore tolerance: H6 or H7.
Series	Standard (metal)
Footnote friction force FR	One wiper seal: Multiply value with factor 0.5
Productgroup ID	17
Maximum dynamic load capacity Cmax	65
Footnote permissible ambient temperature (min ... max)	Only unsealed linear bushings with steel ball retainers may be used at higher temperatures. Make allowance for reductions in load capacity.
Permissible ambient temperature (max)	+80
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
Outer diameter D	7
Permissible ambient temperature (min)	-10
Maximum permissible linear speed vmax	2.5
Size D	7
Friction coefficient μ	0,001 ... 0,004
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	45
Maximum static load capacity C0max	65
Minimum dynamic load capacity Cmin	55
Shaft diameter d	3
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
Size C h12	10
Friction coefficient μ max.	0.004
Footnote maximum static load capacity C0max
Weight	0.0016
Size D1 with tolerance

General technical data

Ø d	mm	3	4	5	8	10	12	16	20	25	30	40	50	60	80
amax	m/s²	100											50
vmax	m/s	2.5											2
m	kg	0.001	0.002	0.01	0.02	0.03	0.04	0.05	0.1	0.19	0.32	0.62	1.14	2.11	4.7
FR	N	-		0.4 1) 2)	0.5 1) 2)	1 1) 2)	2 1) 2)	3 1) 2)	4 1) 2)	5 1) 2)	6 1) 2)	8 1) 2)	10 1) 2)	12 1) 2)	15 1) 2)
Breakaway force	N	-		0.8 1)	1 1)	2 1)	6 1)	9 1)	12 1)	14 1)	18 1)	24 1)	30 1)	36 1)	45 1)
μ 3)		0.001 ... 0.004
Rows of balls		4							5		6
Working bore diameter tolerance	µm	+ 8 0		+ 11 + 1	+ 12 + 2	+ 8 0	+ 12 + 2	+ 14 + 2		+ 16 + 2		+ 19 + 2			+ 24 + 2
Shaft radial clearance h6 4)	µm	+ 12 + 2	+ 14 + 2	+ 16 + 4	+ 18 + 5		+ 20 + 5	+ 22 + 5	+ 23 + 6	+ 25 + 6		+ 30 + 7		+ 33 + 7	+ 37 + 8
Operating conditions
Permissible ambient temperature (min ... max) 5)		-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)	Determined from working bore diameter and shaft tolerance statistics. Recommended housing bore tolerance: H6 or H7.
5)	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	3	4	5	8	10	12	16	20	25	30	40	50	60	80
Cmin	N	55	70	180	320	300	420	580	1170	2080	2820	5170	8260	11500	21000
Cmax	N	65	80	210	370	350	480	670	1390	2480	2980	5480	8740	12100	22200
C0min	N	45	60	140	240	260	280	440	860	1560	2230	3810	6470	9160	16300
C0max	N	65	85	200	330	370	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-R060030300-Standard LB, closed, 3, without seal

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	3	4	5	8	10	12	16	20	25	30	40	50	60	80
D		mm	7	8	12	16	19	22	26	32	40	47	62	75	90	120
C	h12	mm	10	12	22	25	29	32	36	45	58	68	80	100	125	165
C1	H13	mm	-		14.2	16.2	21.6	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	18	20.5	24.9	30.5	38.5	44.5	58	71	85	114

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.