Bonfiglioli F series gearbox spare parts identification and replacement guide

5451 Bearing 30306/32207 Conical Roller Bearing

5453 bearings 30305/32206 are paired with 5451 for use

5454 bearing 32018X four point contact ball bearing

5457 bearing 32208 output end support bearing

5460 oil seal 90 × 110 × 12 DL double lip oil seal

5871 key bar 8 × 7 × 30 C output shaft key

Oil seal specification:

The DL suffix indicates Double Lip sealing, suitable for environments with high dust levels

CAL. Ø 90 indicates that the inner diameter of the oil seal is 90mm

Engineering tip: When replacing the oil seal, be sure to confirm the installation direction of the oil seal - the lip faces the lubricating oil side, and the dust lip faces the outside. Incorrect installation direction will result in oil seal failure.

Input Module spare parts identification

The input sub component is the connecting bridge between the power source (motor) and the gearbox gear system. The F series supports multiple input interfaces, each with a different composition of spare parts.

3.1 IEC Motor Input Module (P (IEC))

Suitable for input modules of standard IEC flange motors, covering P63 to P250 motor interfaces.

F 51-F 90 IEC input module core spare parts:

Item number, part name, specification description, engineering significance

The 23 input shaft depends on the motor specifications and is connected to the motor shaft through a key

21 Cover - Protect bearings and oil seals

24 motor adapter flange corresponding to P160/P180/P200 and motor flange docking

151 Pinion gear: The first stage driving gear is directly coupled to the motor shaft

32 Bearing holder - carrying input shaft bearings

34 oil seal liner - protect input oil seal

Comparison of input bearings for different motor specifications:

Motor specification input bearing model oil seal specification key strip specification

P160 6016 / 6216 80×110×10 L 8×7×45 A

P180 6016 / 6216 80×110×10 L 8×7×45 A

P200 6216 / 3216 80×110×10 L 14×9×57 C

3.2 NEMA Motor Input Module

For the input interface of NEMA standard motors in the North American market, the spare part structure is similar to the IEC version, but the size standards are different. The manual separately lists the spare parts list for NEMA interfaces from N56TC to N320TC.

Key Differences:

The specification of the fastening thread is imperial (such as 3/8-16 × 1 ", 1/2" -13 × 1 ")

The dimensions of bearings and oil seals are different from the IEC version

Adapt flange size according to NEMA standards

Engineering tip: When repairing the F series gearbox with NEMA interface, it is necessary to use imperial tools to avoid damaging bolts or threaded holes. When replacing bearings, the NEMA specific bearing model indicated in the manual (such as 6008-2RS corresponding to N56TC interface) should be used.

3.3 HS/NHS input module

HS (solid shaft input) and NHS (solid shaft input with shrink disc) are another common input configuration of the F series, suitable for scenarios where the prime mover is directly connected through a coupling.

F 10-F 60 HS/NHS input module spare parts:

Tag number, part name, F 10 specification, F 31 2/3 specification

42 Input shaft -6207

41 end cover——

151 Small Gear——

45/46 Spacer Ring——

5041 bearing (input side) 3206-2RS 6207

5043 bearing (output side) 6206-2RS 6306-2RS

5046 oil seal (HS version) 35 × 62 × 7 L 30 × 52 × 7 DL

Special spare parts for the Tightening Disc version (NHS): The NHS version is equipped with a tightening disc component on the input shaft, and its spare parts list includes additional tightening disc parts (part number 5044, etc.), which require special attention when replacing.

Additional Gear Module spare parts

When the F series reducer requires more reduction stages, an additional gear module will be configured. The manual provides a detailed list of additional module spare parts for F 20 3, F 25 4, F 31 4, F 41 4, F 51 4, F 60 4, F 70 4, F 80 4, and F 90 4.

4.1 Additional Module Structure

An add-on module is essentially an additional planetary or parallel axis gear stage installed between the main housing and the input module. Its core spare parts include:

Item number, part name, function description

101 additional module housing accommodates additional gear stages

102 Pinion Drive Gear

103 large gear driven gear

The joint surface between 104 gasket sealing modules

151 small gear (input stage) connected to the previous stage or input shaft

4.2 Bearing specifications for different types of additional modules

Model: Bearing (part number 5101) Bearing (part number 5102) Oil Seal Specification

F 20 3 6201 2Z 6004 42×?

F 25 4 6201 2Z 6004 42×?

F 31 4 6006 6305 45×55×2 "R"

F 41 4 NJ202 3206-2RS —

F 51 4 NJ203 6008 —

F 60 4 6010 5080 —

F 70 4 6304 6304 —

F 80 4 6404 6304 —

F 90 4 6306 6630 —

Engineering Tip: The gasket (part number 104) between the additional module and the main box must be replaced after disassembly and cannot be reused. During installation, LOCTITE 574 or equivalent sealant should be applied to the joint surface to ensure oil tightness.

Anti reverse device (AL/AR Option) spare parts

For applications that pose a risk of reverse rotation such as hoisting and lifting, the F series offers an Anti run back device option. The device automatically locks the output shaft when the motor is powered off, preventing the load from falling.