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Roller guide system T-Rase series MR

The linear roller guideways of MR series consists of the guideway of C-shaped profile itself. The precise rollers are equipped with a lubricant for all service life and protected by the end seals 2RS. The carriages can be supplied with three or five rollers, including the sprags, to adjust the preload. The roller guideways of MR series are ideal for the heavy operating conditions coupled with the high dust levels and contamination of the working environment, as well as they perfectly compensate the misalignments during the guideway mounting on uneven surfaces


Roller guide system of MR series


The system of guideways is specifically designed for heavy operating conditions, where contamination is the constant problem. Most of the roller guideways have in-depth circulation paths, on which the rollers run. The different kinds of debris and dirt fall and collect into these in-depth paths, that leads to the rapid wear and damage of the rollers. The convex circulation paths of MR series provide the free space for the accumulation of dirt and debris, which are forced out from the circulation path by the running  rollers. This feature allows to work with the guideways of MR series in such conditions, where the usual roller guideway systems quickly fail.

 

RV,RP,RA

Sliders of RV, RP, RA series

The sliders of this series are made of galvanized steel with the mounting holes that are parallel to the axes of rollers and perpendicular to the direction of the main load. Sliders have the rollers with the end protection, axial scrapers and longitudinal seals for optimal protection of the internal parts, and the sealing strip to prevent accidental damage of the fixed rollers. The sliders have 3 sizes, and each one has 3 or 5 rollers

Sliders type  R
RVT, RAT, RPT, RFT

Sliders of RVT, RAT, RPT, RFT series

The sliders of this series are made ​​of galvanized steel with the mounting holes that are perpendicular to the axes of rollers and parallel to the main load. Sliders have the rollers with the end protection, axial sleeves to protect the internal parts. The sliders have 2 sizes, and each one has 3 or 5 rollers.

Sliders type  R.T.
 Sliders of RVS, RAS, RPS, RFS series

 Sliders of RVS, RAS, RPS, RFS series

The sliders of this series have a thin area, but without compromising for productivity. They also can have as a threaded and through mounting holes. Standard slider housing is made of galvanized steel, but also can be made of stainless steel to increase corrosion resistance. The sliders have 2 sizes that are available of 2 materials, and consist of 3, 4 or 5 rollers.

 Sliders type R.S.

The sliders are available with 3 or 5 rollers. In the version with 3 rollers, 1st and 3rd rollers - are fixed and roll along one path. The medium roller is a sprag and rolls along the opposite path. The sprag is used to adjust the preload of the slider in the guideway. In the version with 5 rollers, last and central rollers - are fixed and roll along one path. The 2nd and 4th rollers - are the sprags and roll along the opposite path. The sprags are used to adjust the preload of the slider in the guideway. Since one circulation path is contacted with a large number of rollers than another, the slider has a preferred (main) load direction. The slider is marked by two circular marks, showing the direction of the main load acting at the support on the large amount of rollers. The control is required during the assembly of the system to ensure the accordance with maximum load capacity of the system.

Sliders of MR series with 3 and 5 rollersLoad distribution on the rollers 

Rollers in the sliders consist of two different geometric shapes to achieve the different levels of coupling with the guideway (RCV, REV) at two contact points with the circulation path. The floating rollers (RCP, REP) contact with the circulation path only at its top point, so they are held by the guideway only in the radial direction and can move axially but their motion is restricted by the boards. By using the different combinations of driving and floating rollers, the sliders with different operational characteristics can be received. These combinations help to avoid the alignment problems at the mounting of two parallel sliders on the opposite guideway.

Driving rollers: with the use of driving rollers of RV, RTV and RSV series, the sliders become completely restricted in the guideway, but they withstand the greatest loads and moments in all directions, with a maximum radial load.

Floating rollers of RP, RSP, RTR series provide the free movement in the system of 2 guideways that are mounted on the uneven surfaces with a large parallelism error. But these rollers also accept the sufficient radial loads. For the 43rd size, the sliders of RF, RFT and RFS series provide the greatest axial movement.

Rotating sliders: at the different combinations of driving and floating rollers, the sliders of RA, RSA, RTA series can provide the full radial load, and at the same time they have the ability to turn slightly without compromising of the preload at the movement. This ability is required for compensation at the angular deviations of two guideways from each other during the mounting on uneven surfaces.

The combination of floating and rotating sliders together in the system of two guideways of MR series provides a full rigidity at the movement, but at the same time compensates the displacements of two guideways relative to each other. Such displacements occur at the mounting on welded frames, aluminum frames, on the sheet metal, etc. The ability of the guideway system of MR series to self-leveling at the movement removes the need for leveling and grinding of mounting surfaces.

 Roller contact pointsContact points of the rollers 
Roller contact pointsContact points of the rollers 

Combination of self-leveling system 

Selfaligning combination Selfaligning combination

 

 Rail of MR series ball bearing of MR series
Lenght L (mm)
MRg18 MR28 MR43
160    
240 240  
320 320  
400 400 400
480 480 480
560 560 560
640  640 640
720  720 720
800  800 800
880  880 880
960 960 960
1040 1040 1040
1120 1120 1120
1200 1200 1200
1280 1280 1280
1360 1360 1360
1440 1440 1440
1520 1520 1520
1600 1600 1600
1680 1680 1680
1760 1760 1760
1840 1840 1840
1920 1920 1920
2000 2000 2000
2080 2080 2080
2160 2160 2160
2240 2240 2240
2320 2320 2320
2400 2400 2400
2480 2480 2480
2560 2560 2560
2640 2640 2640
2720 2720 2720
2800 2800 2800
2880 2880 2880
2960 2960 2960
  3040 3040
  3120 3120
  3200 3200
  3280 3280
  3360 3360
  3440 3440
  3520 3520
  3600 3600
  3680 3680
  3760 3760
  3840 3840
  3920 3920
  4000 4000
 

(Example of ordering code: MR28L - 640)

Code А (мм) b (мм) С (мм) S (мм) D (мм) d (мм) e (мм) d2  (мм) Screw type

Weight
(Kg/m)

MRG18S 18 9.5 7,1 2,8       4,5 M4 DIN7991 0,68
MRG18L 9 5 1,9   M4 TORX*
MR28S 28 12 8 3       5,5 M5 DIN7991 1,25
MR28L 11 6 2   M5 TORX*
MR43S 43 18 13,2 5       8,5 M8 DIN7991 3.04
MR43L 18 10 3,2   M8 TORX*

*special screws with TORX strip are supplied with the rail

Screw type   g (мм) S (мм) V (мм)  

Tightening
Torque

M4 TORX M4 8 1,9 8 Т20 3,5 Нм
M5 TORX M5 10 2 10 Т25 10 Нм
M8 TORX M8 16 3 16 40 20 Нм
 

 Technical description

The rails of MR series are manufactured in 3 sizes - 18mm, 28mm and 43mm - with two types of the mounting holes. MR**L series is the rail with holes with cylindrical countersinking, for the special screws with low cylindrical head that are supplied with the rail. MR**S series is the rail with holes for standard countersunk head screws of ISO5933. The rail has a C-shaped cross-section with the convex inner circulation paths. The circulation paths are polished for smooth and silent motion of the rollers. The inner paths are protected from outside impacts and other types of effects that could damage the circulation surface.

The rail shape also protects the rollers from various damages. The rails of MR series are made from carbon steel and hardened by the deep nitriding. The rail surface is treated with a special innovative method TRACE-NOX, which provides the excellent protection against corrosion. The coverage is not sprayed, which can be scraped, the coating is deeply implanted into the surface material. The result is a very proof and long lasting protective effect against the rail corrosion, which has a black color due to micro impregnation of the oil and antioxidants.

Sliders of R series for rails of MR seriess

Sliders with 3 rollers Dimensions leading sliders RV
Sliders with 5  rollers of R series
Code Rail
type
e (mm) F (mm) g (mm) H (mm) i (mm) L (mm) M (mm) A (mm) b (mm) С (mm) D (mm) Weight (gr) C (N) С0 rad (N) C0 ax (N) Mx (Nm) My (Nm) Mz (Nm)
RVG18-3 MRG18 18 16,5 9,5 7,1 4,8 16 M5 77 70 20 52 75 3300 1600 690 3 9 15
RVG18-3 3300 1600 0 0 0 15
RVG18-3 3300 1600 460 3 9 15
RVG18-5 120 112 20   120 4455 2160 1150 6 18 48
RVG18-5 4455 2160 0 0 0 48
RVG18-5 4455 2160 690 6 18 48
RV28-3 MR28 28 24 12 8 9,7 25 M5 102 94 35 78 240 6000 3200 1380 9 27 46
RV28-3 6000 3200 0 0 0 46
RV28-3 6000 3200 920 9 27 46
RV28-5 148 140 25   360 8100 4320 2300 18 46 120
RV28-5 8100 4320 0 0 0 120
RV28-5 8100 4320 1380 18 46 120
RV43-3 MR43 43 37 18 13,2 14,8 40 M8 146 136 55 114 730 14200 7200 3210 32 92 155
RV43-3 14200 7200 0 0 0 155
RV43-3 14200 7200 2080 32 92 155
RV43-3 14200 7200 0 0 0 155
RV43-5 216 207 40   1130 19170 9720 5350 64 165 418
RV43-5 19170 9720 0 0 0 418
RV43-5 19170 9720 3560 64 165 418
RV43-5 19170 9720 0 0 0 418

Rotating sliders of RA series

Series (+/-) а°
RA18 1,5
RA28 1,5
RA43 1,5

 

Floating sliders of RP series

Series (+/-) а° F Min F Max
RP18 1,5 16 17
RP28 1,5 23,4 24,6
RP43 1,5 36 38

 

Extra floating slider of RF series

Series (+/-) а° F Min F Max
RP43 1,5 36 38

 

 

Sliders of R*T series for rails of MR series

The sliders of RVT, RAT, RPT, RFT series have the mounting holes that are parallel to the radial load. The slider can be mounted on top by the threaded holes or from the bottom by the through holes.

Slider type Threaded holes for top mounting Passing holes for bottom mounting, screw UNI 5931
  d1 (мм) n (мм) Тип винта d2 (мм) S (мм) D (мм)
R.T28-3 M6 15 M5 Ø 5,5 5 Ø 9
R.T28-5 M6 15 M5 Ø 5,5 5 Ø 9
R.T43-3 M8 20 M6 Ø 6,5 6 Ø 10,5
R.T43-5 M8 20 M6 Ø 6,5 6 Ø 10,5

The versions of sliders A and B differ only by a maximum radial load that is applied to the mounting surface or away from it. The predominant direction of the load is marked by two circular marks. (Example of ordering code: RVT28-3A or RVT28-3B). The slider housing is mounted in two ways. The first way is the screwing of the mounting screw by the mounting part into the threaded hole

Dimensions leading sliders RVT

Rotating sliders of RAT series

Series (+/-) а°
RAT28 1,5
RAT43 1,5

 

Rotating sliders of RAT series

Floating sliders of RPT series

Series (+/-) а° F Min F Max
RPT28 1,5 23,7 24.9
RPT43 1,5 36,2 38,2

 

Floating sliders of RPT series

Extra floating slider of RFT series

Series (+/-) а° F Min F Max
RFT43 1,5 36,2 40,2

 

Extra floating slider of RFT series

 

 

 3 roller slider for R.T series  - Version A  3 roller slider for R.T series  - Version B
 Sliders with 5 rolleres of R.T. series Sliders with 5 rolleres of R.T. series 
Code Rail
type
e (mm) F (mm) g (mm) H (mm) i (mm) L (mm) n (mm) Q (mm) R (mm) A (mm) b (mm) C (mm) Weight(gr) C (N) С0 rad (N) C0 ax (N) Mx (Nm) My (Nm) Mz (Nm)
RVT28-3 MR28 28 24,3 12 8 10 30 15 32 19,5 104 94 36 280 6000 3200 1380 9 27 46
RVT28-3 6000 3200 0 0 0 46
RVT28-3 6000 3200 920 9 27 46
RVT28-5 140 148 25 430 8100 4320 2300 18 46 120
RVT28-5 8100 4320 0 0 0 120
RVT28-5 8100 4320 1380 18 46 120
RVT43-3 MR43 43 37,2 18 13,2 15 45 20 47 30 151 140 56 730 14200 7200 3210 32 92 155
RVT43-3 14200 7200 0 0 0 155
RVT43-3 14200 7200 2140 32 92 155
RT43 -3 14200 7200 0 0 0 155
RVT43-5 235 224 42 1130 19170 9720 5350 64 165 418
RVT43-5 19170 9720 0 0 0 418
RVT43-5 19170 9720 3210 64 165 418
RVT43-5 19170 9720 0 0 0 418

Example of ordering code: RVT28-B: Driving slider with 3 rollers, version B.

Sliders of R*S and R*SX series for rails of MR series

Ultra compact slider, with a slim slider body, for applications with the limited space. The working characteristics are similar to the sliders of R type in combination with the self-leveling. By the lengthened slider with 4 rollers, the operational characteristics of one slider are optimized, instead of using the 2 usual sliders.

Driving slider of RVS series.

Driving slider of RVS series.

 

Driving slider of RVS series.

The sliders are supplied as the standard version with threaded holes - R*S*-** and R*S*-**C - with through holes for the mounting by the standard screws DIN912 without disturbing the rollers.

Slider type М Type of fixing screws
R.GS18-.. М4  
R.GS18-..C Ø4,5 М4 DIN912
R.S28-..C М5  
R.S28-.. Ø5,5 M5 DIN912
R.S43-.. М6  
R.S43-..C Ø6,5 M6 DIN912

 

Sliders with 3 rollers of R.S series Sliders with 5 rollers of R.S series
Sliders with 4 rollers

Sliders of stainless steel

The sliders with 28 and 43 sizes are also made of stainless steel. The rollers are hardened by AISI 440, housing is hardened by AISI 304. The load abilities are identical to the standard sliders of RVS and RPC series

The long sliders of R*S**-4L are produced as an economical alternative for the most of the cases, when using the 2 sliders, mainly for the rational use of space, but not for high load capacity. Also, these sliders will be one for high moments Mz and My.

Example of ordering code:

RVS28-3: driving thin slider with 3 rollers.
RPS43-4LC: long thin rotating slider with 4 rollers and cylindrical mounting holes.

Rotating sliders of RAS series

Series (+/-) а°
RAS18 1,5
RAS28 1,5
RAS43 1.5

 

Rotating sliders of RAS series

Floating sliders of RPS series

Series (+/-) а° F Min F Max
RAS18 1,5 14,3 15,3
RAS28 1,5 17,6 18,8
RAS43 1,5 27,2 28,2

 

 Floating sliders of RPS series

Extra floating slider of RSF series

Series (+/-) а° F Min F Max
RAS43 1,5 27,2 30,2

 

 

 Extra floating slider of RSF series

 
Code Rail
type
e (mm) F (mm) g (mm) H (mm) i (mm) L (mm) A (mm) b (mm) C (mm) D (mm) Weight (gr) C (N) С0 rad (N) C0 ax (N) Mx (Nm) My (Nm) Mz (Nm)
RVGS18-3 MRG18 18 14,8 9,5 7,1 3 15 83 73 21 8 75 3300 1600 690 3 9 16
RPGS18-3 3300 1600 0 0 0 16
RAGS18-3 3300 1600 460 3 9 16
RVGS18-5 112 102 50 8 120 4455 2160 1150 6 19 49
RPGS18-5 4455 2160 0 0 0 49
RAGS18-5 4455 2160 690 6 19 49
RVGS18-4L 160 150 98 8 125 3300 1600 920 6 27 78
RPGS18-4L 3300 1600 0 0 0 78
RAGS18-4L 3300 1600 460 6 27 78
RVS.28-3 MR28 28 18,2 12 8 4 25 118 108 32,5 10 140 6000 3200 1380 9 30 52
RPS.28-3 6000 3200 0 0 0 52
RAS.28-3 6000 3200 920 9 30 52
RVS.28-5 166 156 82 10 210 8100 4320 2300 18 52 130
RPS.28-5 8100 4320 0 18 0 130
RAS.28-5 8100 4320 1380 0 52 130
RVS.28-4L 210 200 126 10 230 6000 3200 1840 18 73 202
RPS.28-4L 6000 3200 0 0 0 202
RAS.28-4L 6000 3200 920 18 73 202
RVS.43-3 MR43 43 28,2 18 13,2 6 40 164 153 46 16 440 14200 7200 3210 32 98 165
RPS.43-3 14200 7200 0 0 0 165
RAS.43-3 14200 7200 1240 32 98 165
RVS.43-3 14200 7200 0 0 0 165
RPS.43-5 241 230 124 16 670 19170 9720 5350 64 180 440
RAS.43-5 19170 9720 0 0 0 440
RVS.43-5 19170 9720 3210 64 180 440
RPS.43-5 19170 9720 0 0 0 440
RAS.43-4L 311 300 194 16 750 14200 7200 4280 64 257 698
RVS.43-4L 14200 7200 0 0 0 698
RPS.43-4L 14200 7200 2140 64 257 698
RAS.43-4L 14200 7200 0 0 0 698

 

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