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NSK Linear GuidesTM Random-matching Roller Guide RA Series

■ Lineup New!

Roller slide model Random-matching Roller slide model Shape
AL BN BL EM High precision grade PH
Model High-load type
No. AN GM Slight preload Medium preload AN/AL ANAN/ B/NBN EME/MG
ZZ ZH ALA/LB/LBL Super-high-load type
RA25 ◯
RA30 ◯ ◯◯◯◯◯ ◯ ◯ Shape
RA35 ◯
RA45 ◯ ◯◯◯◯◯ ◯ ◯ BN/BL Square type High load type
RA55 ◯ Roller slide model
RA65 ◯ ◯◯◯◯◯ ◯ ◯

◯◯◯◯◯ ◯ ◯

◯ ◯ ◯ ◯ A◯N / BN ◯ ◯ EM EM/ GM
ー ◯ ー ◯ A◯L / BL ◯ ◯

■ Accuracy GM

Running parallelism of PH grade is equivalent to P5 grade of preloaded Flanged type (Tapped & thru holes) Super-high-load type
assembly.

Fig. 1 Running parallelism Table1 Assembly accuracy ■ High rigidity

35 Accuracy Unit : µm Rigidity of the RA series is higher than that of the ball slide type
30 grade
Random- Fig. 2 Compression rigidity
25 Precision grade P6 Characteristics matching
High precision 10
20 grade PH
Running parallelism (µm)
Deformation µmMounting Allowance208 Reference RA35AN
height H Variation 15 25 LH35AN (ball type) (roller type)
Slight preload ZZ
15 Mounting Allowance 25 6 Medium preload ZH

10 width 4
W2 or W3 Variation
New: High precision grade PH 20

5 (Same as high precision grade P5) Note Variation on the same rail 2

0 Variation on multiple rails RA35AN (roller type)

0 500 1 000 1 500 2 000 2 500 3 000 3 500 0 Medium preload ZH

Rail length (mm) 0 1 000 2 000 3 000 4 000

Load N

■ Reference Number

Rail N *** PH Z

Example R1A 35 1000 L C Preload code Z : Common for slight
preload ZZ and medium preload ZH
Rail series code Accuracy code PH : High precision grade
Size
Rail length Design serial number
Rail shape code L : Standard Butting rail specification N : Non-Butting, L : Butting specification
Material surface treatment code C : Special high carbon steel

Roller slide

Example RAA 35 AN PH Z ** Option code
No code : No surface treatment,
Roller slide series code -F : Fluoride low temperature chrome plating

Size Preload code Z : Slight preload ZZ, H : Medium preload ZH
Roller slide shape code Accuracy code PH : High precision grade, KH : High precision grade with NSK K1

Assembly

Example RA 35 1000 AN C 2 *** PH Z Preload code Z : Slight preload ZZ,

Series name H : Medium preload ZH

Size Accuracy coad PH : High precision grade,
Rail length KH : High precision grade with K1

Roller slide shape code Design serial number

Material surface treatment code C : Special high carbon steel Number of roller slides per rail

NSK Ltd. has a basic policy not to export any products or technology designated as controlled items
by export-related laws. When exporting the products in this brochure, the laws of the exporting
country must be observed. Specifications are subject to change without notice and without any
obligation on the part of the manufacturer. Every care has been taken to ensure the accuracy of the
data contained in this brochure, but no liability can be accepted for any loss or damage suffered
through errors or omissions. We will gratefully acknowledge any additions or corrections.

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