SRS. Caged Ball LM Guide Miniature Type Model SRS. Point of Selection. Point of Design. Options. Model No. Precautions on Use

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1 Caged Ball M Guide Miniature Type Model M rail Endplate End seal M block Compact type Model -M Ball Side seal Ball cage Wide type Model -WM * or the ball cage, see A. Point of Selection A Point of Design A Options A A Precautions on Use A Accessories for ubrication A Mounting Procedure and Maintenance B Equivalent moment factor A Rated oads in All Directions A Equivalent factor in each direction A Radial Clearance A Accuracy Standards A Shoulder Height of the Mounting Base and the Corner Radius A Permissible Error of the Mounting Surface A latness of the Mounting Surface A Dimensions of Each Model with an Option Attached A A

2 Structure and eatures Caged Ball M Guide model has a structure where two raceways are incorporated into the compact body, enabling the model to receive loads in all directions, and to be used in locations where a moment is applied with a single rail. In addition, use of ball cages eliminates friction between balls, thus achieving high speed, low noise, acceptable running sound, long service life, and long-term maintenance-free operation. ow Dust Generation Use of ball cages eliminates friction between balls and retains lubricant, thus achieving low dust gen-eration. In addition, the M block and M rail use stainless steel, which is highly resistant to corrosion. M Guide Compact Since has a compact structure where the rail cross section is designed to be low and that contains only two rows of balls, it can be installed in space-saving locations. ightweight Since part of the M block (e.g., around the ball relief hole) is made of resin and formed through insert molding, is a lightweight, low inertia type of M Guide. A

3 Types and eatures Model 5M 5 is the smallest caged ball M guide. Specification TableA Model -5N Specification TableA Overall M block length () is greater than for model 5M; load rating and permissible moment are higher as well. Model 5WM Specification TableA This model has a larger overall M block length (), width (W), rated load and permissible moment than model 5M. A

4 Model -5WN Overall M block length () is greater than for model 5WM; load rating and permissible moment are higher as well. Specification TableA M Guide Model -S Overall M block length () is less than that of model -M. Specification TableA Model -WS Has a longer overall M block length (), a greater width and a larger rated load and permissible moment than -S. Specification TableA A

5 Model -M A standard type of. Specification TableA Model -WM Has a longer overall M block length (), a greater width and a larger rated load and permissible moment than -M. Specification TableA Model -N Compared with model -M, it has a longer total M block length () and a higher load rating and permissible moment. Specification TableA A

6 Model -WN Compared with Model -WM, it has a longer total M block length () and a higher load rating and permissible moment. Specification TableA M Guide -G Specification TableA to A The -G, a model equipped with uncaged, full-complement bearings, is also available. Due to its cageless design, however, the -G s dynamic load rating is lower than that of standard models. or specific data, please refer to the dimension tables in this catalog. latness of the M Rail and the M Block Mounting Surface Since the Model has Gothic-arch grooves, any precision errors in the mounting surface may negatively affect its operability. Therefore, we recommend using on mounting surfaces made with high precision. Table1 latness of the M Rail and the M Block Mounting Surface latness error 5.15/2 7.25/2 9.35/2 12.5/2 15.6/2 2.7/2 25.7/2 Unit: mm Note 1) As many factors can affect the mounting precision, we recommend using values 7% or less than those shown. Note 2) The above figures apply to normal clearances. When using two or more rails with C1 clearance, we recommend using values 5% or less than those shown. A

7 Models -S, -M and -N W M T W2 B d N W1 K H3 M1 h d1 d2 Model 5 2-S l Outer dimensions M block dimensions Height Width ength Greasing hole 5M 5GM 5N 5GN 7S 7GS 7M 7GM 7N 7GN 9XS 9XGS 9XM 9XGM 9XN 9XGN 12S 12GS 12M 12GM 12N 12GN Model number coding M W B C Sl 1 T K N d H M M M M M M M M M M M Note) Since stainless steel is used in the M block, M rail and balls, these models are highly resistant to corrosion and environment. The -G is equipped with uncaged, full-complement bearings. Using a greasing hole other than for greasing may cause damage. 2 12M QZ UU C1 +22 P M - With QZ Contamination M rail length ubricator protection accessory (in mm) symbol (*1) No. of M blocks Radial clearance symbol (*2) used on the same rail Normal (No symbol)/ight preload (C1) Stainless steel M rail Symbol for No. of rails used on the same plane (*4) Accuracy symbol (*3) Normal grade (No Symbol)/High accuracy grade (H) Precision grade (P) (*1) See contamination protection accessory on A. (*2) See A. (*3) See A. (*4) See A. Note) This model number indicates that a single-rail unit constitutes one set. (i.e., required number of sets when 2 rails are used in parallel is 2 at a minimum.) Those models equipped with QZ ubricator cannot have a grease nipple. When desiring a grease nipple for a model attached with QZ, contact THK. A

8 M T W2 N W B W1 d K H3 M rail dimensions M1 h d2 d1 4-Sl C Models 7M/N,9XM/XN,12M/N Basic load rating Static permissible moment N-m 2-Sl Models 7S,9XS,12S Mass Unit: mm M Guide Width Height Pitch ength C C M A M B M C M block M rail W 1 W 2 M 1 d 1 d 2 h Max kn kn Double block blocks 1 Double block blocks 1 block Note) The maximum length under ength indicates the standard maximum length of an M rail. (See A.) Static Permissible Moment 1 block: Static permissible moment value with 1 M block Double blocks: static permissible moment value with 2 blocks closely contacting with each other or the 5M and 5N M guide, the balls will fall out of the block if it is removed from the rail. To secure the M rail of model 5M, use cross-recessed head screws for precision equipment (No. pan head screw, class 1) M2. Reference bolt tightening torque when mounting an M block for model 5 and 7 are shown in the table below. Reference tightening torque Reference tightening of screw Screw depth (mm) torque(n-m) 5 M M * Tightening above the tightening torque affects accuracy. Be sure to tighten at or below the defi ned tightening torque. kg kg/m OptionsA A

9 Models -S, -M and -N 2-Sl Model 15S M T W2 d W B N W1 K H3 M1 h d2 d1 4-Sl C Models 15M/N,2M,25M Outer dimensions M block dimensions Height Width ength Greasing hole Grease nipple 15S 15GS 15M 15GM 15N 15GN 2M 2GM 25M 25GM Model number coding M W B C Sl 1 T K N E d H M M M M M PB PB PB PB PB121B 5 Note) Since stainless steel is used in the M block, M rail and balls, these models are highly resistant to corrosion and environment. The -G is equipped with uncaged, full-complement bearings. or the 15S/M/N, 2M, and 25M, if a grease nipple is required, please specify upon ordering. Using a greasing hole other than for greasing may cause damage. 2 2M QZ UU C1 +22 P M - With QZ ubricator Contamination protection accessory symbol (*1) M rail length (in mm) Stainless steel M rail Accuracy symbol (*3) Symbol for No. of rails used on the same plane (*4) No. of M blocks Radial clearance symbol (*2) Normal grade (No Symbol)/High accuracy grade (H) used on the same rail Normal (No symbol)/ight preload (C1) Precision grade (P) (*1) See contamination protection accessory on A. (*2) See A. (*3) See A. (*4) See A. Note) This model number indicates that a single-rail unit constitutes one set. (i.e., required number of sets when 2 rails are used in parallel is 2 at a minimum.) Those models equipped with QZ ubricator cannot have a grease nipple. When desiring a grease nipple for a model attached with QZ, contact THK. A

10 E 2-Sl M T W2 W B W1 K H3 M1 h d2 d1 Model 15GS N E 4-Sl C M Guide M rail dimensions Basic load rating Models 15GM/GN,2GM,25GM Static permissible moment N-m Mass Unit: mm Width Height Pitch ength C C M A M B M C M block M rail W 1 W 2 M 1 d 1 d 2 h Max kn kn Double block blocks 1 Double block blocks 1 block kg kg/m Note) The maximum length under ength indicates the standard maximum length of an M rail. (See A.) Static Permissible Moment 1 block: static permissible moment value with 1 Mblock Double blocks: static permissible moment value with 2 blocks closely contacting with each other OptionsA A

11 Models -WS, -WM and -WN T M W d N K M1 H3 W2 W1 h d1 d2 Model 5 C 2-S Outer dimensions M block dimensions Height Width ength Greasing hole 5WM 5WGM 5WN 5WGN 7WS 7WGS 7WM 7WGM 7WN 7WGN 9WS 9WGS 9WM 9WGM 9WN 9WGN 12WS 12WGS 12WM 12WGM 12WN 12WGN Model number coding A M W B C Sl 1 T K N d H M3 through M3 through M M M M M M M M M Note) Since stainless steel is used in the M block, M rail and balls, these models are highly resistant to corrosion and environment. The -G is equipped with uncaged, full-complement bearings. Using a greasing hole other than for greasing may cause damage. 2 12WM QZ UU C1 +47 P M - No. of M blocks used on the same rail With QZ ubricator Contamination protection accessory symbol (*1) M rail length (in mm) Radial clearance symbol (*2) Normal (No symbol)/ ight preload (C1) Stainless steel M rail Symbol for No. of rails used on the same plane (*4) Accuracy symbol (*3) Normal grade (No Symbol)/High accuracy grade (H) Precision grade (P) (*1) See contamination protection accessory on A. (*2) See A. (*3) See A. (*4) See A. Note) This model number indicates that a single-rail unit constitutes one set. (i.e., required number of sets when 2 rails are used in parallel is 2 at a minimum.) Those models equipped with QZ ubricator cannot have a grease nipple. When desiring a grease nipple for a model attached with QZ, contact THK.

12 M T W B d N K H3 W2 W1 M1 M rail dimensions h d2 d1 4-Sl C Models 7WM/WN,9WM/WN,12WM/WN Basic load rating Static permissible moment N-m 2-Sl Models 7 to 12WS Unit: mm Mass M Guide Width Height Pitch ength C C M A M B M C M block M rail W 1 W 2 W 3 M 1 d 1 d 2 h Max kn kn Double block blocks Double block blocks block kg kg/m Note) The maximum length under ength indicates the standard maximum length of an M rail. (See A.) Static Permissible Moment 1 block: static permissible moment value with 1 Mblock Double blocks: static permissible moment value with 2 blocks closely contacting with each other or the 5WM and 5WN, the balls will fall out of the block if it is removed from the rail. Reference bolt tightening torque when mounting an M block for model 5 and 7W are shown in the table below. Reference tightening torque of screw Screw depth (mm) Reference tightening torque(n-m) 5W M W M * Tightening above the tightening torque affects accuracy. Be sure to tighten at or below the defi ned tightening torque. OptionsA A

13 Models -WS, -WM and -WN 2-Sl Model 15WS M T W2 W B d N W3 W1 K H3 M1 h d2 d1 4-Sl C Model 15WM/WN Outer dimensions M block dimensions Height Width ength Greasing hole Grease nipple 15WS 15WGS 15WM 15WGM 15WN 15WGN Model number coding M W B C Sl 1 T K N E d H M M M PB17 PB17 PB17 Note) Since stainless steel is used in the M block, M rail and balls, these models are highly resistant to corrosion and environment. The -G is equipped with uncaged, full-complement bearings. or the 15WS/WM/WN, if a grease nipple is required, please specify upon ordering. Using a greasing hole other than for greasing may cause damage. 2 15WM QZ UU C1 +55 P M - No. of M blocks used on the same rail With QZ ubricator Contamination protection accessory symbol (*1) M rail length (in mm) Radial clearance symbol (*2) Normal (No symbol)/ ight preload (C1) Stainless steel M rail Symbol for No. of rails used on the same plane (*4) Accuracy symbol (*3) Normal grade (No Symbol)/High accuracy grade (H) Precision grade (P) (*1) See contamination protection accessory on A. (*2) See A. (*3) See A. (*4) See A. Note) This model number indicates that a single-rail unit constitutes one set. (i.e., required number of sets when 2 rails are used in parallel is 2 at a minimum.) Those models equipped with QZ ubricator cannot have a grease nipple. When desiring a grease nipple for a model attached with QZ, contact THK A

14 E 2-Sl M T W2 W B W3 W1 K H3 M1 h d2 d1 Model 15WGS N E 4-Sl C M Guide Model 15WGM/WGN Unit: mm M rail dimensions Basic load rating Static permissible moment N-m Mass Width Height Pitch ength C C M A M B M C M block M rail W 1 W 2 W 3 M 1 d 1 d 2 h Max kn kn Double block blocks Double block blocks block kg kg/m Note) The maximum length under ength indicates the standard maximum length of an M rail. (See A.) Static Permissible Moment 1 block: static permissible moment value with 1 Mblock Double blocks: static permissible moment value with 2 blocks closely contacting with each other OptionsA A

15 Standard ength and Maximum ength of the M Rail Table2 shows the standard lengths and the maximum lengths of model variations. If the maximum length of the desired M rail exceeds them, jointed rails will be used. Contact THK for details. or the G dimension when a special length is required, we recommend selecting the corresponding G value from the table. The longer the G dimension is, the less stable the G area may become after installation, thus causing an adverse impact to accuracy. G G Table2 Standard ength and Maximum ength of the M Rail for Model Unit: mm 5 5W 7 7W 9 9W 12 12W 15 15W 2 25 M rail standard length ( O ) Standard pitch G Max length Note1) The maximum length varies with accuracy grades. Contact THK for details. Note2) If jointed rails are not allowed and a greater length than the maximum values above is required, contact THK. A

16 M Guide A