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[BATTERY] absolute multi-turn tracker: instant feedback without homing

RZ35 Series — 35mm Single-Turn Absolute Encoder

High-reliability, high-resolution multi-turn absolute encoder. Created specifically as an exact drop-in, zero-vibration equivalent alternative for the legacy Tamagawa SA35 Series series. Integrates perfect physical boundaries with compliant high-speed 2.5MHz RS485 communication protocols.

[OVERVIEW] Product Introduction & Absolute Features Sourcing Guide

Features a robust multi-turn absolute feedback design with an integrated battery-backed 16-bit multi-turn counter. Custom-tailored for compact size 40 and size 60 micro servo motors, it delivers precise absolute position tracking through standard high-speed RS485 serial communications at 2.5MHz baud rates.

[CORE] CORE ABSOLUTE PLATFORM DEFINITIONS

CHASSIS ENVELOPE

dia. 35.0 mm

Radial Clearance Fits

AXIAL HOUSING DEPTH

21 mm

Thinned Profile Profile

SERIAL INTERFACE

RS485 Serial

Baud Rate 2.5 MHz

{/* Bullet features */}

[FEATURE] ENVIRONMENTAL STRETCH & RELIABILITY:

Power-Off Memory: Multi-turn absolute counts retained by external 3.6V backup battery lines, requiring zero mechanical homing.
Dual Channel Warning: Integrated alert registries warn of battery exhaustion (Low at 3.1V, fault at 2.5V).
Heavy-Duty IP40 Shielding: Hermetic optical sealing defends glass grating scale from grease, thermal shocks, or stray CNC debris.

[COMMUNICATION] REAL-TIME SERIAL ATTRIBUTES:

Single-Turn Precision: True selectable 17-bit (131072 steps) or 23-bit (8388608 steps) high accuracy optical readings.
Multi-Turn Capacity: 16-bit tracker tracks up to 65,536 turns continuously.
Low Power Drain: High-efficiency receiver consumes less than 100mA under work.
Vibration Protection: Fully handles 10G to 15G dynamic axis shocks at max 6000 rpm speeds.
Nominal Voltage: Operates strictly on a +5V DC ± 5% power line.

[BLUEPRINT] RZ35 SERIES Mechanical Integration & Shaft Clearances

Refer to the absolute physical layout of the EPOCH RZ35 Series below. Confirm tapered motor shaft dimensions to ensure a smooth, concentric absolute fitment:

[BLUEPRINT] [RZ35A08 Outline Dimension Sheet]

RZ35A08 Mechanical Dimension Drawing

[RZ35A09 Outline Dimension Sheet]

RZ35A09 Mechanical Dimension Drawing

To ensure zero publishing conflicts, complex SVG CAD tags are gracefully omitted.
Sizing Specifications: Encoder OD dia. 35.0 mm ｜ Axial Envelope Thickness 21 mm ｜ Mating Connection: 9mm Conical 1:10 Tapered Shaft.

[CORE] Tapered Cone & Spring Fit Parameters:

Taper Axis Accuracy: Standard axes feature conical Ø9 tapered shaft with 1:10 scaling, minimizing dynamic slippage and eccentricity.
Friction Mounting Bracket: Supports standard PCD d40/d55 leaf plates (or d31 micro springs for RZ35) for backlash-free physical locking.
Dynamic Speed Limits: Rated up to a maximum continuous speed of 6000 rpm.

[PROPERTIES] RZ35 SERIES Guaranteed Absolute Technical Specifications

Electrical & Physical Parameters	Certified Technical Standards (Sourcing Alignment)
Model Lineage	EPOCH RZ35 Series (Absolute Multi-turn Line)
Single-turn Resolution	17-Bit absolute single-turn (17-Bit (131072 CPR) steps per revolution)
Multi-turn Counter capacity	16-Bit multi-turn counter (Tracks up to 65,536 turns continuously)
Baud Rate / Serial Frequency	2.5 MHz serial transmission bandwidth (Half-duplex communication protocol)
Interface Command Protocol	RS485 Serial Protocol (Fully Tamagawa-compatible command sequence)
Supply Line Voltage (Vcc)	+5.0 V DC ± 5% Voltage input
Power Backup Battery Line (Vb)	+3.0V to +3.6V DC input (Standard: 3.6V lithium cell)
Battery Alert Alarm Thresholds	Low-alert warning active at 3.1V ｜ Critical system fault active at 2.5V
Absolute Positioning Accuracy	< ± 50 Angular Seconds (High precision optical disk array)
Outer Chassis Profile	dia. 35.0 mm Outside diameter
Operating Temperature Range	-20 °C to +105 °C temperature limits

[WAVEFORMS] RS485 Absolute Communication & Timing Diagrams

Our absolute encoders utilize synchronous half-duplex high-speed serial networks to convey continuous single-turn/multi-turn telemetry. Observe our timing wave structures below:

[WAVEFORMS] [RS485 Serial Timing Diagram Omitted for Compatibility] RS485 Serial Transmission Scheme: Asynchronous high-speed half-duplex communication. Drive sends 8-bit Query request code. Turnaround delay (t_d < 3 µs) is followed by Encoder sending a multi-byte Response packet containing 17/23-bit position, 16-bit multi-turn status, alarm flags, and secure CRC checksum.

[WAVEFORMS] Verified Communication Timing Rules:

Transmission Speed: Constant 2.5 Mbps transmission rate, protecting feedback loop coordinates against electromagnetic lag or phase offsets.
Turnaround Delay (t_d): After receiving the 8-bit request frame, the line rests for a minimal period (t_d < 3 µs) before the encoder responds.
CRC-8 Validation Integrity: All coordinates frames are ended with a CRC-8 code byte to guarantee safe data integrity inside high-voltage inverters.

[TIP] Sourcing & Procurement Note: Traditional incremental encoders rely on raw pulse edges to calculate positions. RZ Absolute Encoders communicate precise positional numbers serially. This guarantees the driver knows the absolute rotor position immediately upon power-on, bypassing standard incremental homing sequences and protecting machines from collision hazards!

[MOUNTING] RZ35 SERIES Mounting Accessories & Leaf Springs Brackets

EPOCH supplies premium, rigid, anti-backlash leaf springs options to adapt to diverse servo motor shell geometries:

[MOUNTING] [Mating Bracket Blueprint Omitted for Compatibility]

MP4131-704R (BM Type-Medium Profile with ‌⌀31 Mounting Holes) Leaf Spring Mechanical Drawing

MP4131-704R (BM Type-Medium Profile with‌⌀31 Mounting Holes) Leaf Spring Mechanical Drawing

MP2831-704R (BL Type-Low Profile with ‌⌀31 Mounting Holes) Leaf Spring Mechanical Drawing

MP1631-704R (BP Type-Flat Profile with ‌⌀31 Mounting Holes) Leaf Spring Mechanical Drawing

MP4140-704R (CM Type-Standard Profile with ‌⌀40 Mounting Holes) Leaf Spring Mechanical Drawing

MP2840-704R (CL Type-Low Profile with ‌⌀40 Mounting Holes) Leaf Spring Mechanical Drawing

Standard leaf-spring mounting brackets options:
Type d31/d40 Plate Spring: Suits micro-servo mount configurations.
Type d55 Plate Spring: Standard 1:1 fitment for large frame spindles.

Bracket Accessory Reference	Mounting PCD Pitch Limits	Main Mechanical Layout Attributes
MP35-001A-31	Pitch d31 ｜ Low profile	Fully compatible with miniature 35mm absolute frames (RZ35), fitting small-shaft size 40 motor caps.
MP4409-002A-40	Type C ｜ Pitch d40	Standard 2-point alignment spring for 44mm outer box absolute frames (RZH4409A).
MP4409-001A-55	Type D ｜ Pitch d55	High-tension 4-point bracket suited for standard 48mm absolute encoders (RZH4809A).

[DECODING] Decoded Ordering Codes & Wire Terminal Schemes

Refer to our 11-step decoded catalog guide below to specify exact absolute model serials corresponding to your shaft and resolution configurations:

R Z 35 09 Q 17 P T BL 5V G0.35m

1. Series Identifier R — Absolute Absolute Encoder Type

2. Structural Style Z (With Bearing)

3. Outer Case Box 35 — OD 35.0 mm profile

4. Inside Sleeve Bore 09 — Hollow/tapered shaft dimensions

5. Master Code Q (Taper/Shaft Code)

6. Absolute Bits 17 — Selectable 17-bit / 23-bit resolution

7. Turn configuration P — Multi-turn absolute (Pseudo turn mapping)

8. Protocol Interface T — RS485 Half-duplex (Tamagawa Serial compliant)

9. Spring Mount BL (Low profile d31)

10. Standard Voltage 5V — +5V Supply Line Input

11. Lead-Out wire limits G0.35m — Standard 0.35m Shielded Flat Cable

{/* Wiring definitions - 6 channel absolute multi-turn wire connection table */}

[WIRING] absolute Multi-turn wire connections (PDF exact values)

Please strictly align wire schemas to prevent polarity reversal or sensor data losses during high-duty servo runs:

Terminal Signal	Required Cable colors	Functional absolute Description
Vcc (+5V)	Red / 红	Power Supply Line (+5V DC ± 5%, current drain < 100mA)
GND (0V)	Black / 黑	Main Ground Reference Loop
SD+ (Data+)	Blue / 蓝	High-speed RS485 non-inverted differential data line
SD- (Data-)	Blue-Black / 蓝黑	High-speed RS485 inverted differential data line
VB (Battery +3.6V)	Brown / 棕	External Multi-turn memory retention battery (+3.0V ~ +3.6VDC)
GND_BAT (Bat Ground)	Brown-Black / 棕黑	Floating Battery ground reference line
SHIELD (FG)	Shield braid / 屏蔽	Intertwined outer metal shield for high-voltage active noise grounding

[RETROFIT] Cross-Referencing & Sourcing Retrofit Guides

Review exact mechanical tolerances and serial packet bandwidth alignments below to verify a seamless electrical retrofit substitute:

Technical Criterion	EPOCH RZ35 Series Equivalent	Tamagawa SA35 Series Legacy Standard	Sourcing Compatibility Fit
Chassis Outer Diameter	OD 35.0 mm	OD 35.0 mm	Guarantees 1:1 drop-in electrical & mechanical compatibility with Tamagawa SA35 series absolute multi-turn encoders, supporting 17-bit / 23-bit position resolution.
Axial Envelope Thickness	21 mm Thickness	21 mm Thickness	Preserves the standard 21.0mm axial spacing, eliminating modifications of original motor endcap and alignment structures.
Baud Rate & Clock speed	2.5 MHz Serial Baud Rate	2.5 MHz Clock Rate	Applies high-speed 2.5 MHz RS485 communication, perfectly aligning serial telemetry formats and data transmission registers.
Position Resolution Registers	True Selectable 17-Bit / 23-Bit Absolute single-turn	Standard 17-Bit / 23-Bit absolute	100% compliant register positions reading, supporting standard servo driver clock formats with zero modifications.
Battery-Backed multi-turns	16-Bit multi-turn counter (retains up to 65,536 turns)	Common 16-Bit multi-turn absolute	Full range coordinate retaining, preventing index shifts during backup battery switches.

[DISCLAIMER] Trademark & Interchangeability Safety Notice:

All raw OEM corporate marks, trademarks, and specific part model definitions (including "TAMAGAWA", "SA35", "SA48", and "TS5700") referenced across these comparison indices and parameters grids are physical properties of their respective corporate registration holders. Their inclusion here is intended strictly to declare mechanical dimensions matching and electrical protocol equivalence.
EPOCH is a fully independent absolute encoder and feedback device manufacturer. We hold no licensing links, representation agencies, standard distribution franchises, or joint partnerships with any of the named trademark owners.
Supervisors and engineers are advised to verify taper shaft size boundaries, RS485 communication protocols, single-turn resolution bits, battery voltage parameters, and lead-out wire configurations to guarantee safe, durable substitutions on heavy CNC or robotic axes.

[SEO CLASSIFICATION] Sourcing Queries & Interchange Cross Indexes

Primary Absolute Index Classification: RZ35-AS ｜ RZ35 absolute encoder ｜ 35mm absolute encoder

Verified Sourcing Modifiers & Classifiers: absolute multi-turn encoder ｜ size 40 servo absolute feedback ｜ SA35 alternative

Equivalent OEM Part Serials Cross-Referenced: Tamagawa SA35 replacement ｜ TS5667 absolute substitute ｜ TS5668 absolute alternative

[FAQ] Technical Absolute FAQs Sourcing Guide

Explore standard queries regarding the EPOCH RZ35 absolute absolute Multi-turn Encoder series to secure proper replacements:

[Q:] How does the EPOCH RZ35 function as a 1:1 direct replacement for a Tamagawa SA35 absolute encoder?

The EPOCH RZ35 absolute encoder is designed to serve as a mechanically and electrically interchangeable equivalent for the Tamagawa SA35 (TS5667/TS5668 series). It matches the 35mm outer diameter and offers customized mounting pitches (PCD d31 or d40) alongside hollow shaft (6mm/8mm) or 9mm conical shaft alignments, running the same 2.5MHz RS485 serial data format.

[Q:] What battery voltage specification is required for the RZ35 multi-turn memory retention?

The RZ35 multi-turn memory is backed up by an external battery supply line. The backup range is standard 3.0V to 3.6V (typically 3.6V DC). The encoder features intelligent battery health indicators: it triggers a low battery warning at 3.1V and reports a position tracking fault if the backup drops below 2.5V.

[Q:] What serial communications interfaces are supported by the RZ35 series?

Our RZ35 series absolute encoders standardly support high-speed RS485 serial communication with a 2.5MHz baud rate (Tamagawa protocol compatible). It can also be manufactured with alternative industry interfaces such as SSI or BiSS protocols to drive dynamic closed-loops on diverse CNC systems.

B2B Global Absolute RFQ Sourcing

Request an absolute Equivalent quote shortly

Need custom absolute bits configurations (17-bit / 21-bit / 23-bit), specialized connector harnesses, or bulk contract evaluations? Send coordinates to our direct sales dispatch channels.

[RFQ] Request Direct Sourcing Evaluation Info

Sales Office: liya@epoch-electronic.com. Include desired resolution bits (17/23), shaft sleeve size, application speed and annual volumes.

Legal Disclaimer & Trademark Attribution: Tamagawa® and OIH48 are registered trademarks of Tamagawa Seiki Co., Ltd. (多摩川精工株式会社) or their respective manufacturers. All manufacturer names, symbols, series, and descriptions used in this document are for nominal cross-compatibility indexation, cross-referencing, and market application identification purposes only. There is no implied affiliation, authorization, sponsorship, or factory endorsement between EPOCH and any original equipment manufacturers (OEM). All aftermarket equivalent products supplied by EPOCH are manufactured under independent specifications and certified ISO quality standards to serve as high-quality physical and electrical functional replacements.

Ordering Information

Ordering Information / Part Number

RZ35 Series Ordering Information

Note: 8mm straight shaft and 9mm conical shaft are only available for the RZ35A.

absolute encoder shaft

Packaging Information

Item	Description	QTY/Box	Boxes/Carton	G.W	N.W	QTY/Carton	Package Size
RZ35	Absolute Encoder,Outer Diameter 35mm	10pcs	10boxes	0.38kgs	0.3kgs	100pcs	31013045mm

Discover all the technical specifications by downloading the datasheet today.

All Rotary Encoder

Part Number

Interface

Dimensions
(mm)

Resolution Ranges

Resolution Counter

Communication
Frequency

Working Temperature

Communication
Frequency

Operation Speeds

Protection
Structure

Footprint 3D

Datasheet

Sample

RZ35A08

RS485

Φ35mm

17~23 Bits

Single/Multi-Turn

Differential output

-20°C-+105°C

16K

6000rpm

IP40

RZ35A09

RS485

Φ35mm

17~23 Bits

Single/Multi-Turn

Differential output

-20°C-+105°C

16K

6000rpm

IP40

RZ35D06Q

RS485

Φ35mm

17~23 Bits

Single/Multi-Turn

Differential output

-20°C-+105°C

16K

6000rpm

IP40

RZ35D06S

RS485

Φ35mm

17~23 Bits

Single/Multi-Turn

Differential output

-20°C-+105°C

16K

6000rpm

IP40

RZL4408A

RS485

Φ44mm

17~23 Bits

Single/Multi-Turn

Differential output

-20°C-+105°C

16K

6000rpm

IP40

RZH4409A

RS485

Φ44mm

17~23 Bits

Single/Multi-Turn

Differential output

-20°C-+105°C

16K

6000rpm

IP40

RZL4409A

RS485

Φ44mm

17~23 Bits

Single/Multi-Turn

Differential output

-20°C-+105°C

16K

6000rpm

IP40

RZ4809A

RS485

Φ48mm

17~23 Bits

Single/Multi-Turn

Differential output

-20°C-+105°C

16K

6000rpm

IP40

UZ3509

RS485

Φ35mm

1000-5000CPR

Single/Multi-Turn

Differential output

-20°C-+105°C

500khz

IP40

UZ4408

RS485

Φ44mm

1000-5000CPR

Single/Multi-Turn

Differential output

-20°C-+105°C

500khz

IP40

UZ4409

RS485

Φ44mm

1000-5000CPR

Single/Multi-Turn

Differential output

-20°C-+105°C

500khz

IP40

UZ4809

RS485

Φ48mm

1000-5000CPR

Single/Multi-Turn

Differential output

-20°C-+105°C

500khz

IP40

-40°C to +85°C

-40°C to +85°C

-20°C to +85°C

-20°C to +85°C

-20°C to +85°C

Single/Multi-Turn

-40 °C ~+85 °C

RT28

Single/Multi-Turn

-40 °C ~+85 °C

RF20

Single/Multi-Turn

-40 °C ~+85 °C

RR28

Single/Multi-Turn

-40 °C ~+85 °C

RS5

Single/Multi-Turn

RSG35

RS485

17-23 Bits

Single/Multi-Turn

≤16K

-20 ℃ ~+105 ℃

16K

6000rpm

IP40

RSU3506

RS485

17-24 Bits

Single/Multi-Turn

≤16K

-20 ℃ ~+105 ℃

16K

6000rpm

IP40

MS Series

17 Bits

Single/Multi-Turn

≤16K

-10℃～105℃

16K

≤6000rpm

RZ44 & RZ48

RS485

17-23 Bits

Single/Multi-Turn

≤16K

-20 ℃ ~+105 ℃

16K

6000rpm

IP40

RZ1337A

RS485

25 Bits

Single/Multi-Turn

≤16K

-20°C-+105°C

16K

12000rpm

IP40

RZ7810

RS485

23~25 Bits

Single/Multi-Turn

≤16K

-20°C-+105°C

16K

6000rpm

IP40

RS Series

RS485

17~23 Bits

Single/Multi-Turn

≤16K

-20°C-+105°C

16K

6000rpm

IP40

RZ35 Series

RS485

Φ35mm

17~23 Bits

Single/Multi-Turn

Differential output

-20°C-+105°C

16K

6000rpm

IP40

RZ35 Series

RS485

Φ35mm

17~23 Bits

Single/Multi-Turn

Differential output

-20°C-+105°C

16K

6000rpm

IP40

Less Space,More Possibilities

Easy Integration Of Encoders

RZ35A 35mm Single-Turn Absolute Encoder

Request Your Quote Today

Related Products

RZ35 Series — 35mm Single-Turn Absolute Encoder

[OVERVIEW] Product Introduction & Absolute Features Sourcing Guide

[FEATURE] ENVIRONMENTAL STRETCH & RELIABILITY:

[COMMUNICATION] REAL-TIME SERIAL ATTRIBUTES:

[BLUEPRINT] RZ35 SERIES Mechanical Integration & Shaft Clearances

[PROPERTIES] RZ35 SERIES Guaranteed Absolute Technical Specifications

[WAVEFORMS] RS485 Absolute Communication & Timing Diagrams

[MOUNTING] RZ35 SERIES Mounting Accessories & Leaf Springs Brackets

[DECODING] Decoded Ordering Codes & Wire Terminal Schemes

[WIRING] absolute Multi-turn wire connections (PDF exact values)

[RETROFIT] Cross-Referencing & Sourcing Retrofit Guides

[SEO CLASSIFICATION] Sourcing Queries & Interchange Cross Indexes

[FAQ] Technical Absolute FAQs Sourcing Guide

Request an absolute Equivalent quote shortly

Ordering Information

Ordering Information / Part Number

Packaging Information

All Rotary Encoder

Application

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