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RA Series dimension table

Square type (tapped mounting holes)
RA–AN (High-load type/standard), RA–BN (Super-high-load type/long)

Assembly

RAExample of 35 1000 AN C 2 8 8 P6 Z

specification number: Preload code 1: Z1 Slight preload
3: Z3 Medium preload
Series code Z: Random matching with preload

Size No. Accuracy grade∗1 (Without NSK K1): P3, P4, P5, P6
(With NSK K1): K3, K4, K5, K6
Rail length (mm)
Design serial number
Roller slide shape code AN, BN
Number of roller slides per rail
Material and surface treatment code, C: Special high carbon steel (NSK standard)

∗1 Only P6 and K6 grades are available for the random-matching type.

Random-matching rail

R1AExample of 35 1000 L C N 8 8 P6 Z

specification number: Preload code Z: Random matching with preload
Accuracy grade P6: Precision
RA Series random-matching rail code Design serial number
Size No.
Rail length (mm) Butting specification
Rail shape code L: Standard N: Non-butting specification L: Butting specification
Material and surface treatment code, C: Special high carbon steel (NSK standard)

Random-matching roller slide

RAA 35 AN P6 Z FExample of Option code
No code: No surface treatment
specification number:

RA Series random-matching F: Fluoride low temperature chrome plating
roller slide code C: No surface treatment + rail cover
CF: Fluoride low temperature chrome plating + rail cover

Size No. Z: Random matching with preload

Roller slide shape code AN, BN Accuracy grade P6: Precision

Assembly Roller slide
Height
Model No. Width Length B Mounting hole B1 L1 J1 K Grease fitting
H E W2 W 26 4 24 T Mounting hole T1 N
RA15AN 34 L 32 J M ×Pitch× 6 44.8 9.4 25
RA15BN 44 35 6.5 60.2 17.1 35 8 φ3 8 3
28 4 9.5 48 70 40 26 M 4×0.7×6 10 38.5
RA20AN 60 85.4 50 10 57.5 10.75 48.5
RA20BN 30 5 12 70 60 36 M 5×0.8×6 13 77.3 13.65 62 12 φ 3 4 3
86 86.5 75 50 12.5 71
RA25AN 100 106.3 76 25 65.5 15.25 77
RA25BN 40 5 12.5 126 35 M 6×1×9 83.5 16.75 12 M 6×0.75 10 11
97.5 50
RA30AN 115.5 74 17
RA30BN 45 6.5 16 40 M 8×1.25×11 98.6 19.3 14 M 6×0.75 10 11
110.8 60
RA35AN 135.4 83.2 16.6
RA35BN 55 6.5 18 50 M 8×1.25×12 111.4 19.7 15 M 6×0.75 15 11
123.8 72
RA45AN 152 105.4 22.7
RA45BN 70 8 20.5 60 M 10×1.5×17 141.4 30.7 17 RC1/8 20 14
154 80
RA55AN 190 128 26.5
RA55BN 80 9 23.5 75 M 12×1.75×18 178 41.5 18 RC1/8 21 14
184 95
RA65AN 234 155.4 42.7
RA65BN 90 13 31.5 70 M 16×2×20 229.5 54.75 22 RC1/8 19 14
228.4 120
302.5

✽ Select either one of two F dimensions, the standard or the parenthesized semi-standard dimensions, for the pitch of rail fixing bolt holes.
If not specified, the standard dimension of F is applied.

✽ The random-matching type is available for the model of RA25 to RA65.

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