E69-C68B Datasheet, PDF (1/5 Pages) Omron Electronics LLC – Coupling Materials and Characteristics

CSM_RotaryEncoder_OP_E_6_1
Rotary Encoders
Accessories
Couplings
Coupling Materials and Characteristics
OMRON provides two types of couplings for different
application conditions: Resin and metal. Select the best type
for the application.
As a general rule, use metal couplings for high resolution and
resin couplings for low resolution. (As a rough guide, a high
resolution is one that exceeds 3,600 ppr.)
Even for applications requiring relatively low resolution, a metal
coupling will provide more reliability in applications involving
rapid acceleration/deceleration or for Encoders with high
starting torque.
Comparison of Specifications for 6-mm Shafts
Material
Resin
Metal
Machine specification (standard type) (aluminum, helical)
Eccentricity (mm)
0.5
0.15
Eccentricity (degrees)
6
3
Deviation in shaft
direction (mm)
±0.4
±0.15
Allowable torque (N·m)
0.8
1.6
Torsion rigidity (Nm/rad)
7
28
Moment of inertia (kg·m²) 1.2 × 10^−7
6 × 10^−7
Weight (g)
4
12
Characteristics
Material
Advantages
Disadvantages
Resin
(standard type)
• Low cost.
• Easy shaft alignment when mounting.
• Lightweight and low moment of inertia, placing a smaller
load on the drive system.
• Low torsion rigidity and thus not suitable for high
resolution.
• Mounting is possible even if the shafts are greatly
misaligned, which can cause damage from fatigue over
long periods of application.
Metal
(aluminum, helical)
• High torsion rigidity and thus suitable for high resolution.
• Transmitted allowable torque is large.
• High cost.
• Heavy and thus place a large load on the drive system.
• The allowable shaft misalignment is small, so accurate
positioning is required when mounting.
Coupling Suitability Table
❍ : Suitable and provided with product, Δ: Suitable and sold separately, ---: Not suitable.
Couplings
Specification
Resin, standard type
Resin,
different end diameter
Metal
Rotary Encoder
Model/shaft dia.
Shaft interior 2 dia.
4 dia.
6 dia.
8 dia.
10 dia. 6 dia., 8 dia., 6 dia., 10 dia., 6 dia.
10 dia.
(tolerance *) (Height: 8), (Height: 8), (Height: 8), (Height: 8), (Height: 8), (Height: 8), (Height: 8), (Height: 8), (Height: 8),
exterior dia. 9 dia.
13 dia.
15 dia.
19 dia.
22 dia.
19 dia.
22 dia.
19.1 dia. 25.4 dia.
Model E69-C02B E69-C04B E69-C06B E69-C08B E69-C10B E69-C68B E69-C610B E69-C06M E69-C10M
E6A2-C
4 dia.
---
❍
---
---
---
---
---
---
---
E6B2-C
6 dia.
---
---
❍
---
---
Δ
Δ
Δ
---
E6C2-C
6 dia.
---
---
Δ
---
---
Δ
Δ
Δ
---
E6C3-C
8 dia.
---
---
---
Δ
---
Δ
---
---
---
E6D-C
6 dia.
---
---
❍
---
---
Δ
Δ
Δ
---
E6F-C
10 dia.
---
---
---
---
Δ
---
Δ
---
Δ
E6H-C
Hollow shaft interior dia.: 8 mm
Hollow-shaft Model; Coupling not required.
E6J-C
2 dia.
❍
---
---
---
---
---
---
---
---
E6C-N
6 dia.
---
---
Δ
---
---
Δ
Δ
Δ
---
E6CP-A
6 dia.
❍ Sold
separately
---
---
only for
---
---
Δ
E6CP-
AG5C-C.
Δ
Δ
---
E6C3-A
8 dia.
---
---
---
Δ
---
Δ
---
---
---
E6F-A
10 dia.
❍ Only
---
---
---
---
Pre-wired
---
Models
Δ
---
Δ
E6J-A
4 dia.
---
❍
---
---
---
---
---
---
---
*Tolerance conforms to JIS standard: JIS B 0401. ➜Refer to page 2.
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