Home / Linear Guideways / AMS 3B Order Key

AMS 3B Order Key

Order Key for Incremental Measuring System

Rail Order Key

Rail Order Code Structure

AMS 3B S [Size]-[Type]-[Accuracy]-[Mounting Hole]-[Reference]-[Length]-[L5]-[L10]

Parameter Code Description
Size 25, 30, 35, 45, 55, 65 Rail size
Type N Standard type
C Cover strip type
ND Fully hardened standard type
CD Fully hardened cover strip type
Accuracy Grade G0 Highly accurate ± 5 µm
G1 Very accurate ± 10 µm
G2 Accurate ± 20 µm
G3 Standard ± 30 µm
Mounting Hole KC / KT Countersunk hole / Threaded hole
Reference Surface R1 / R2 Bottom / Top

Rail Order Example

AMS 3B S 35-N-G1-KC-R1-2000-18.5-18.5

  • AMS 3B S 35 = AMS 3B rail Size 35
  • N = Standard type
  • G1 = Very accurate
  • KC = Standard straightness
  • R1 = Reference surface at bottom
  • 2000 = Rail length 2000mm

Carriage Order Key

Carriage Order Code Structure

AMS 3B W [Size]-[Type]-[Preload]-[Lube Port]-[Lubrication]-[Output Interface]

Parameter Code Description
Size 25, 30, 35, 45, 55, 65 Carriage size
Type A, B, C, D, E, F, G Carriage type
Reading head position P1, P3 Top right / Bottom left
Accuracy class G0, G1, G2, G3 Highly accurate / Very accurate / Accurate / Standard
Preload Class V1, V2, V3 0.03 / 0.08 / 0.13 × C₁₀₀
Reference side R1, R2 Reference bottom (below or right) / Reference top (top or left)
Coating CN, CH None / Hard chromium
Lube Port S10, S11, S12... Lubrication port position
Lubrication State LN, LG, LV Oil protect / Grease protect / Full greasing
Reading head interface TSU / TRU / TMU AMSA analogue 1 Vpp (distinguished by cable outlet type)
TSD / TRD / TMD AMSD digital quadrature signals RS 422
-010-80 AMSD interpolation 10×, resolution 5 µm, max. output frequency 8 MHz
-050-80 AMSD interpolation 50×, resolution 1 µm, max. output frequency 8 MHz
-250-80 AMSD interpolation 250×, resolution 0.2 µm, max. output frequency 8 MHz
ZN / ZF Reference pulse: ZN strictly synchronous with the incremental signals; ZF extended to 550 µs ± 50 µs

Carriage Order Example

AMSA 3B W 35-B-P1-G1-V1-R1-CN-S11-LV-TSU

  • AMS 3B W 35 = AMS 3B carriage Size 35
  • B = Long carriage (wide)
  • V1 = Low preload
  • S11 = Top centre lubrication port
  • LV = Full greasing
  • TSU = AMSA analogue 1 Vpp interface

Output Interface Selection Guide

Analogue AMSA (TSU / TRU / TMU)

Feature Specification
Signal type Analogue 1 Vpp sine/cosine, 90° phase shift
Signal period 200 µm
Resolution Up to 0.0625 µm (determined by the downstream evaluation electronics)
Current consumption 40 mA
Maximum speed AMSA 3B 3 m/s; AMSA 4B 5 m/s

Digital AMSD (TSD / TRD / TMD)

In the order code, the interface code is followed by three segments: interpolation factor, max. output frequency and reference pulse.

Combination Resolution Interpolation factor Max. output frequency
-010-80 5 µm 10× 8 MHz
-050-80 1 µm 50× 8 MHz
-250-80 0.2 µm 250× 8 MHz

Signals are transmitted differentially according to RS 422 (High > 2.5 V, Low < 0.5 V, rise/fall time < 20 ns). Maximum speed 3 m/s; up to 1 m/s at 0.2 µm resolution. Current consumption 110 mA. Reference pulse ZN is strictly synchronous with the incremental signals; ZF is extended to 550 µs ± 50 µs for evaluation electronics that cannot process continuous short pulses.

Standard First/Last Hole Positions by Size

Size L5/L10 (mm) L4 Hole Pitch (mm)
Size 2513.530
Size 301737
Size 3518.540
Size 452552.5
Size 5528.560
Size 653675

Complete Order Examples

Precision machine tool application (AMSA analogue 1 Vpp)

  • Rail: AMS 3B S 45-N-G1-KC-R1-1500-25-25
  • Carriage: AMSA 3B W 45-B-P1-G1-V1-R1-CN-S11-LV-TSU × 2
  • Cable: KAO 12-5 × 2

Automation equipment application (AMSD digital RS 422)

  • Rail: AMS 3B S 35-N-G1-KC-R1-2000-18.5-18.5
  • Carriage: AMSD 3B W 35-A-P1-G1-V1-R1-CN-S11-LV-TSD-050-80-ZN × 2
  • Cable: KAO 12-5 × 2

Ordering Notes

Important Reminders

  • The AMS 3B carriage has a built-in reading head; the output interface type must be specified
  • The resolution of the analogue AMSA is determined by the interpolation capability of the downstream evaluation electronics
  • The interpolation factor of the digital AMSD is specified in the order code (-010 / -050 / -250)
  • An incremental system requires a homing procedure after power on
  • For absolute measurement, please select the AMSABS 3B series
ESC