BRAND: TIMKEN

ID:GRAE25 RRB + COL 

Description:

 

---

GRAE25RRB+COL – Timken Ball Insert Bearing (25 mm Bore, Medium Duty, Eccentric Collar Locking)

Brand: Timken
Item Number: GRAE25RRB+COL
Also Known As: 1225-25EC, AEL205W3, GRAE25NPPB, GRAE25-NPP-B, GRAE25RRB + SE25K, YET205
UPC / EAN: 0087796053205
Category: Bearings for Housings
Country of Origin: Typically U.S.A. or Europe (Timken plant)

---

Product Description

The Timken GRAE25RRB+COL is a medium-duty ball insert bearing featuring a 25 mm straight bore, eccentric collar locking mechanism, and dual rubber seals (2F type) for enhanced protection against contaminants.
This bearing is part of Timken’s GRA-RRB series, designed for high performance in agricultural, industrial, and power transmission applications where easy installation, reliability, and long service life are essential.

Its spherical outer surface allows it to self-align within a housing, compensating for slight shaft misalignment. The nylon cage ensures quiet operation and reduced friction even under demanding conditions.

---

Technical Specifications

Parameter	Metric	Imperial
Bore Diameter (d)	25 mm	0.9843 in
Outside Diameter (D)	52 mm	2.0472 in
Overall Width (B)	31 mm	1.2205 in
Outer Ring Width	15 mm	—
Inner Ring Width	21.44 mm	—
Weight	0.18 kg	0.41 lbs
Radial Dynamic Load Capacity	15,350 N	3,450 lbf
Radial Static Load Capacity	6,940 N	1,560 lbf
Max Speed (Grease)	—	4,540 rpm

---

Design Features

• Type: Ball Insert Bearing (for housings)
• Duty Rating: Medium Duty
• Bore Type: Cylindrical
• Locking Device: Eccentric Collar (COL)
• Outer Ring: Spherical OD (self-aligning)
• Sealing: 2F – Dual rubber contact seals (R-type)
• Cage Material: Nylon
• Lubrication: Standard factory grease
• Finish / Coating: Uncoated
• Snap Ring: Not included
• Temperature Range: −30 °C to +100 °C

---

Suffix Description

• RR: Two land-riding rubber seals
• B: Spherical outer ring
• COL: Eccentric collar locking

---

Performance Advantages

• Reliable eccentric collar locking for secure shaft fit.
• Dual rubber seals for superior contamination resistance.
• Self-aligning outer ring compensates for minor misalignment.
• Nylon cage for smooth, quiet operation.
• Suitable for moderate-speed and medium-load conditions.

---

Typical Applications

• Agricultural machinery (harvesters, conveyors, fans)
• Material-handling equipment
• Industrial drives and housed bearing units
• HVAC systems and conveyor rollers