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Small One-Way Clutch EWC0812C

Model EWC0812C / EWCシリーズ(合成樹脂ばね付き) / JTEKT Corporation (Official website) / Listed on page 3 of the document

High-load small one-way clutch with synthetic resin spring. For 8 mm shaft diameter, torque capacity 1.96 N-m.

Last verified: (date the content was verified against the source document)

Small One-Way Clutch EWC0812C on page 3 of JTEKT Corporation "小形一方クラッチ Miniature One-way Clutch (CAT.NO.B2024-A)"
Source: JTEKT Corporation「小形一方クラッチ Miniature One-way Clutch (CAT.NO.B2024-A)」page 3
A reduced image of the relevant page is quoted from the document. Copyright belongs to JTEKT Corporation.Request removal

Specifications

Shaft diameter d 8 mm
Torque capacity 1.96 N-m
Outer diameter D1 14.2 mm
Number of protrusions on outer ring 6 個
Operating Temperature Range -10～+70 ℃

EWCシリーズ(合成樹脂ばね付き) model comparison

Compare 15 models in the same series by specification.

Model Shaft diameter d Torque capacity Outer diameter D1 Number of protrusions on outer ring Operating Temperature Range
EWC0406A 4 mm 0.08 N-m 8 mm 4 個 -10～+70 ℃
EWC0406C 4 mm 0.15 N-m 8 mm 4 個 -10～+70 ℃
EWC0606XC 6 mm 0.19 N-m 10 mm 6 個 -10～+70 ℃
EWC0608A 6 mm 0.25 N-m 10 mm 6 個 -10～+70 ℃
EWC0608C 6 mm 0.44 N-m 10 mm 6 個 -10～+70 ℃
EWC0608XA 6 mm 0.25 N-m 10 mm 6 個 -10～+70 ℃
EWC0608XC 6 mm 0.44 N-m 10 mm 6 個 -10～+70 ℃
EWC0809A 8 mm 0.49 N-m 12 mm 6 個 -10～+70 ℃
EWC0809C 8 mm 0.88 N-m 12 mm 6 個 -10～+70 ℃
EWC0812A 8 mm 1.18 N-m 14.2 mm 6 個 -10～+70 ℃
EWC0812C This product 8 mm 1.96 N-m 14.2 mm 6 個 -10～+70 ℃
EWC1010A 10 mm 1.18 N-m 16 mm 6 個 -10～+70 ℃
EWC1010C 10 mm 1.96 N-m 16 mm 6 個 -10～+70 ℃
EWC1012A 10 mm 1.37 N-m 16 mm 6 個 -10～+70 ℃
EWC1012C 10 mm 2.35 N-m 16 mm 6 個 -10～+70 ℃

How to choose One-way clutch

Points to check when selecting, with the values for this product (EWC0812C).

  1. 1. Select an inner diameter that matches the shaft diameter

    This product: Shaft diameter d 8 mm

    The applicable shaft diameter of the listed products is 4 to 12 mm. Because the rollers contact the shaft surface directly to transmit torque, the shaft's outer diameter, surface hardness, and surface finish affect clutch operation and service life. Verify the shaft dimensional tolerances and surface treatment against the manufacturer's recommended values.

  2. 2. Allow margin in the load torque

    This product: Torque capacity 1.96 N-m

    The torque capacity of the listed products is 0.08 to 6.28 N·m. Even at the same shaft diameter of 10 mm, capacity ranges from 1.18 N·m for the low-load type to 2.35 N·m for the high-load type. Estimate the maximum load, including impact torque during start-up and stopping, and select a model with sufficient capacity margin.

  3. 3. Match the outer diameter to the housing dimensions

    This product: Outer diameter D1 14.2 mm

    The outer diameter is 8 to 18 mm. Because the outer ring is fixed in the housing by press fitting or molding, design the bore diameter and fit to match the outer diameter. Even at the same shaft diameter, the outer profile varies with width and load type, so confirm it together with the available mounting space.

  4. 4. Prevent creep with the outer ring projections

    This product: Number of protrusions on outer ring 6 個

    Projections on the outer circumference of the outer ring prevent creep, the phenomenon in which the outer ring slips and rotates within the housing. The number of projections is 4 to 8. The housing requires matching groove shapes for the projections, so confirm the number and arrangement on the drawing.

  5. 5. Choose the spring material and mounting method

    Metal-spring types support high loads. Synthetic-resin-spring types support insert molding (a method in which the part is embedded during molding of a resin component). When integrating the clutch into a resin gear or pulley, confirm whether the product is suitable for insert molding.

  6. 6. Check the operating temperature

    This product: Operating Temperature Range -10～+70 ℃

    The characteristics of the pre-packed grease and resin springs change with temperature. Consider internal heat generation and the installation environment, and confirm that the ambient temperature falls within the product's specified operating temperature range.

This guide was written by AI based on the listed products' documents and specification items.

About One-way clutch and all products

Description

One-way clutch of roller and synthetic resin spring lock type. Anti-rotation projections on the outer ring outer diameter prevent creep.

Features

  • Roller-type one-way clutch
  • Creep prevention by anti-rotation projections on outer ring outer diameter
  • Pre-packed with grease, no re-lubrication required
  • Insert molding compatible

Applications

  • Copiers
  • ATMs
  • Ticket vending machines
  • Fishing reels

FAQ

Q. Which shaft diameter is the EWC0812C for? Please also provide the torque capacity and outer diameter.
A. The EWC0812C is for an 8 mm shaft diameter. Torque capacity is 1.96 N-m, and outer diameter D1 is 14.2 mm.
Q. What is the operating temperature range of the EWC0812C, and is grease replenishment required?
A. The operating temperature range is -10 to +70 °C. It is pre-packed with grease and requires no re-lubrication.
Q. What applications is the EWC0812C suited for?
A. It is used in applications such as copiers, ATMs, ticket vending machines, and fishing reels (reels).
Q. Does the EWC0812C have a structure to prevent creep (slippage of idling)?
A. Yes, creep is prevented by anti-rotation projections on the outer ring outer diameter. The number of outer ring projections is 6.
Q. Is the EWC0812C compatible with insert molding?
A. Yes, it is compatible with insert molding.

Written by AI based on the content of the source documents.

Source documents

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