BOSCH REXROTH
R187252310

$3,919.45 USD

BOSCH REXROTH
Material:R187252310
Model:RWA-055-BLS-C2-H-2

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 R.RUNNER BLOCK CS RWA-055-BLS-C2-H-2 (R187252310) is a high-precision roller runner block designed for linear motion applications requiring high accuracy and medium preload. This model is part of the wide Roller Runner Block series, which is specifically engineered to handle high moment loads and offers enhanced rigidity, making it suitable for applications with significant lifting and lateral forces. The runner block body is made from unalloyed steel CS, ensuring durability and strength. This model comes in preload class C for medium preload and accuracy class H for high precision. It does not include a roller chain but boasts a straight lube connection that is loosely attached for ease of maintenance. The overall length of the runner block is meticulously crafted to allow interchangeability with guide rails of every accuracy level. The RWA-055-BLS-C2-H-2 runner block features four reference edges allowing full integration into the machine body, which contributes to its very high torque load capacity and torsional stiffness. Its design includes four additional mounting screws centrally located on the block for improved rigidity under various load conditions. Moreover, attachments can be mounted from above, providing flexibility in design integration. Innovative channel designs ensure that only minimum lubrication quantities are needed, promoting efficiency and reducing maintenance intervals. The roller runner blocks are made from antifriction bearing steel with raceways that are hardened and ground to facilitate smooth and quiet operation. The entry-zone geometry has been optimized along with a high number of rollers per track to minimize variation in elastic deflection. Lastly, the RWA-055-BLS-C2-H-2 features aluminum end caps and integrated front seals as standard components, enhancing the sealing of all running tracks while also protecting the plastic parts against contaminants. These features contribute to the reliability and longevity of the roller runner block in demanding linear motion setups.

Roller runner block, BLS, size 55, steel CS, accuracy high, average preload

The roller runner block is highly precise and characterized by the following product features: Size 55 Format BLS: Width = wide, length = long, height = standard Runner block body made of unalloyed steel CS Preload class C2: Medium preload Accuracy class H: High Without roller chain Preserved Without initial lubrication Without attachment element, left (front reference edge) Without attachment element, right (front reference edge) Straight lube connection loosely attached. Runner block body in standard version Overall length of the runner block = 216.0 mm Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy.

Unpacked Weight: 11.5 kg

Wide Roller Runner Blocks have been developed for high moment loads and maximum rigidity.

Wide roller runner blocks for applications with high moment loads and greater rigidity requirements
Improved travel characteristics
Four reference edges for full installation in machine body
Very high torque load capacity
Very high torsional moment and torsional stiffness
Improved rigidity in case of lifting and lateral loads due to four additional mounting screws in the center of the Roller Runner Block
Attachments on the Roller Runner Block can be mounted from above
Lube nipples possible on all sides for easy maintenance
Minimum lubrication quantities thanks to innovative channel design
Roller runner blocks made from antifriction bearing steel with hardened and ground raceways
Smooth, quiet running thanks to optimally designed return and guideways of the rollers
Minimal variation in elastic deflection thanks to optimized entry-zone geometry and high number of rollers
Aluminum end caps
Integrated front seals are included as standard for improved sealing of all running tracks and to protect the plastic parts

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3D CAD	Download 3D CAD
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Manual	Download Manual
Manual	Download Manual

Size T (profiled rail systems)	60
Material (profiled rail systems)	Carbon steel
Size diameter S5 (profiled rail systems)	14
Size N6 with tolerance (profiled rail systems)	31,2 mm ±0,5
Height of runner block	68
Footnote friction force FR	Guideline value for frictional drags of the complete, sealed and lubricated roller runner blocks.
Size B1 (linear bushing)	162.1
Footnote permissible ambient temperature (min ... max)	100 °C admissible for short time. For operation at lower minus temperatures, please consult us.
Footnote dynamic load capacity C	Determination of the dynamic load capacities and load moments is based on a 100,000 m travel as per DIN ISO 14728-1. Often only 50,000 m are actually stipulated. For comparison: Multiply values C, Mt and ML from the table by 1.23.
Size E2 (profiled rail systems)	95
Max. acceleration amax	150
Footnote friction coefficient μ	Without friction of seal
Permissible ambient temperature	-10 °C ... +80 °C
Size A (profiled rail systems)	165
Size A3 (profiled rail systems)	40
Preload force	13200
Format	BLS - wide, long, standard height
Size A2 (profiled rail systems)	85
Self-aligning for compensation of misalignments	Without self-alignment
Maximum permissible linear speed vmax	3
Lubrication	With preservation and without initial lubrication
Ball chain	Without roller chain
Friction coefficient μ	0,0004 ... 0,001
Height of runner block with guide rail	80
Static load rating C0	345300
Dynamic torsional moment load capacity Mt	7450
Size N6 (profiled rail systems)	31.2
Friction coefficient μ max.	0.001
Size B2 (profiled rail systems)	209.5
Size B (profiled rail systems)	205.5
Preload class	C2 - Medium preload
Size H2 with cover strip (profiled rail systems)	47.85
Friction force	70
Seal	DS – Double-lip seal
Size B1 (profiled rail systems)	162.1
Size H (profiled rail system)	80
Friction coefficient μ min.	0.0004
Size K2 (profiled rail systems)	46.55
Size V1	12
Productgroup ID	17
Accuracy class	H - Highly accurate
Size K1 (profiled rail systems)	43.55
Size A1 (profiled rail systems)	82.5
Dynamic longitudinal moment load capacity ML footnote	Determination of the dynamic load capacities and load moments is based on a 100,000 m travel as per DIN ISO 14728-1. Often only 50,000 m are actually stipulated. For comparison: Multiply values C, Mt and ML from the table by 1.23.
Permissible ambient temperature (max)	+80
Dynamic longitudinal moment load capacity ML	4030
Size S2 (profiled rail systems)	M12
Permissible ambient temperature (min)	-10
Static torsional moment load capacity Mt0	15650
Footnote amax	Requirement: There must be preload, even during operation under load.
Runner block or guide rail	Runner block
Width of runner block	165
Dynamic torsional moment load capacity Mt footnote	Determination of the dynamic load capacities and load moments is based on a 100,000 m travel as per DIN ISO 14728-1. Often only 50,000 m are actually stipulated. For comparison: Multiply values C, Mt and ML from the table by 1.23.
Size E8 (profiled rail systems)	40
Length of runner block	205.5
Linear guide type	Roller rail system
Dynamic load capacity C	165000
Static longitudinal moment load capacity ML0	8440
Size E9 (profiled rail systems)	10.75
Size E1 (profiled rail systems)	140
Nominal size	55/85
Size H1 (profiled rail systems)	68
Size H1 (profiled rail systems)	68

Load capacities and load moments

Size		55/85	65/100
C	N	165000	265500
C0	N	345300	525600
Mt	Nm	7450	14300
Mt0	Nm	15650	28350
ML	Nm	4030	7960
ML0	Nm	8440	15760

	Determination of the dynamic load ratings and load moments is based on a 100,000 m stroke in accordance with DIN ISO 14728-1. Often only 50,000 m are actually stipulated. For comparison: Multiply values C, Mt, and ML from the table by 1.23.

General technical data

Size		55/85	65/100
amax 1)	m/s²	150
vmax	m/s	3
m	kg	11.5	20.7
FR 2)	N	70	90
μ 3)		0.0004 ... 0.001
Material		CS
Operating conditions
Size		55/85	65/100
Permissible ambient temperature (min ... max) 4)		-10 °C ... +80 °C

1)	Prerequisite: There must be preload, even during operation under load.
2)	Guideline value for frictional drags of the complete, sealed and lubricated roller runner blocks.
3)	Without friction of seal
4)	Brief peaks up to 100 °C are permitted. For even lower sub-zero temperatures, please consult us.

Legend

Symbol	Description	Unit
amax	Maximum acceleration travel	m/s2
C	Dynamic load capacity	N
C0	Static load capacity	N
Fpr	Preload force	N
FR	Friction force	N
m	Mass	kg
ML	Dynamic longitudinal moment load capacity	Nm
ML0	Static longitudinal moment load capacity	Nm
Mt	Dynamic torsional moment load capacity	Nm
Mt0	Static torsional moment laod capacity	Nm
vmax	Maximum permissible speed	m/s
μ	Friction coefficient

General technical data and calculations

Accuracy classes

Definition of preload class

The preload class is the pre-tensioning force Fpr based on the dynamic load rating C of the particular roller runner block.

Selection of the preload class

Code	Application area
C1	Special version on request
C4
C5
C2	For precise guide systems with both high external loading and high demands on overall rigidity;also recommended for single rail systems.
	Above average moment loads can be absorbed without significant elastic deflection.
	Further improved overall rigidity with only medium moment loads.
C3	For highly rigid guide systems such as precision machine tools, etc.
	Above average loads and moments can be absorbed with the least possible elastic deflection.
	Roller runner blocks with preload C3 available in accuracy classes P, SP (GP) and UP only.

Recommended combination based on preload and accuracy class

Recommendation for preload C2: Accuracy classes H and P

Recommendation for preload C3: Accuracy classes P and SP (GP)

Combination of hard chrome plated roller runner blocks with hard chrome plated roller guide rails

Upon combination of hard chrome plated roller runner blocks with preload C2 or C3 and hard chrome plated roller guide rails, the preload increases by approx. half a preload class.

Preload force Fpr (N)

Roller Runner Blocks			Size	25	35	45	55	65	100	125	55/85	65/100
	Type	Design type	Preload class	Preload force Fpr (N)
Roller runner block, steel1) Roller runner block, Resist CR2)	R1851 R1822 R1821 R1861	FNS SNS SNH	C1	830	1680	2930	3860	6520	‒	‒	‒	‒
			C2	2240	4510	7890	10400	17600	36900	60600	‒	‒
			C3	3640	7320	12800	16800	28500	59900	98400	‒	‒
			C4	4770	9610	16800	22100	37400	‒	‒	‒	‒
			C5	5610	11300	19700	26000	43900	‒	‒	‒	‒
	R1853 R1823 R1824 R1863	FLS SLS SLH	C1	1010	2060	3640	4790	8140	‒	‒	‒	‒
			C2	2720	5540	9790	12900	21900	50600	81600	‒	‒
			C3	4420	8990	15900	20900	35500	82200	132600	‒	‒
			C4	5800	11800	20800	27400	46600	‒	‒	‒	‒
			C5	6810	13900	24500	32200	54700	‒	‒	‒	‒
	R1854	FXS	C2	‒	‒	‒	‒	29300	‒	‒	‒	‒
	R1854	FXS	C3	‒	‒	‒	‒	47700	‒	‒	‒	‒
Wide roller runner block, steel1) Wide roller runner block, Resist CR2)	R1872	BLS	C2	‒	‒	‒	‒	‒	‒	‒	13200	21200
	R1872	BLS	C3	‒	‒	‒	‒	‒	‒	‒	21500	34500

1)	All steel parts made of carbon steel
2)	Steel roller runner block body with corrosion-resistant coating, matt silver finish, hard chrome-plated

Rigidity of roller rail system for preload C2

Wide roller runner block BLS R1872

Roller runner block mounted with 8 screws:

Only reference edges at top are used

All screws of strength class 12.9

Preload class

C2 = Preload (in accordance with table for pre-tensioning force Fpr in section "Technical information")

Down load

technical illustration-R187252310-Roller runner block, BLS, size 55, steel CS, accuracy high, average preload

1)	δel. = elastic deformation μm
2)	F = load N

lift-off load

side load

1)	δel. = elastic deformation μm
2)	F = load N

Rigidity of roller rail system for preload C2

Wide roller runner block BLS R1872

Roller runner block mounted with 8 screws:

All 4 reference edges at top and bottom are used

All screws of strength class 12.9

Preload class

C2 = Preload (in accordance with table for pre-tensioning force Fpr in section "Technical information")

Down load

1)	δel. = elastic deformation μm
2)	F = load N

lift-off load

1)	δel. = elastic deformation μm
2)	F = load N

side load

1)	δel. = elastic deformation μm
2)	F = load N

Rigidity of roller rail system for preload C3

Wide roller runner block BLS R1872

Roller runner block mounted with 8 screws:

Only reference edges at top are used

All screws of strength class 12.9

Preload class

C3 = Preload (in accordance with table for pre-tensioning force Fpr in section "Technical information")

Down load

1)	δel. = elastic deformation μm
2)	F = load N

lift-off load

1)	δel. = elastic deformation μm
2)	F = load N

side load

1)	δel. = elastic deformation μm
2)	F = load N

Rigidity of roller rail system for preload C3

Wide roller runner block BLS R1872

Roller runner block mounted with 8 screws:

All 4 reference edges at top and bottom are used

All screws of strength class 12.9

Preload class

C3 = Preload (in accordance with table for pre-tensioning force Fpr in section "Technical information")

Down load

1)	δel. = elastic deformation μm
2)	F = load N

lift-off load

1)	δel. = elastic deformation μm
2)	F = load N

side load

1)	δel. = elastic deformation μm
2)	F = load N

a)	For O-ring
	size 55/85: Ø 7 · 1.5 (mm)
	size 65/100: Ø 12 · 1.5 (mm)
	Open lube port if necessary (see section entitled "Lubrication").
b)	Recommended position for pin holes
	(E4 dimensions, see section entitled "Notes for mounting", segment "Pinned fitting").
	Rough-drilled holes made for may exist at this position for manufacturing reasons. They are suitable for drilling out.
c)	Lube nipple, thread M6 – 8 deep:
	Connection possible on all sides.
	Dimensions differ among different connection pieces. See "Accessories" for more information about lube ports.

Dimensions

Size		55/85	65/100
A	mm	165	200
A1	mm	82.5	100
A2	mm	85	100
A3	mm	40	50
A3.1	mm	40	50
B	mm	205.5	254
B1	mm	162.1	194
B2	mm	209.5	258
B3	mm	216	264
E1	mm	140	172
E2	mm	95	110
E3	mm	40	50
E8	mm	40	72
E8.2	mm	113.6	143
E9	mm	10.75	19.3
E9.2	mm	50.75	65
H	mm	80	100
H1	mm	68	86
Dimension H2 with cover strip	mm	47.85	58.15
K1	mm	43.55	55
K2	mm	46.55	59
N3	mm	19	20
N5	mm	19	27
N5.1	mm	19	19.3
N6		31.2 mm ±0.5	39 mm ±0.5
S2		M12	M14
ØS5	mm	14	16
S9		mm
T2 1)	mm	60	75
T3	mm	32	38
V1	mm	12	15